The balanced equation for the given chemical reaction is:2 NH3(g) + 5 F2(g) → N2F4(g) + 6 HF(g)
What is the balanced chemical equation?a. To produce 4.00 moles of HF, we can use the stoichiometry of the balanced equation.
From the balanced equation, we can see that the mole ratio of NH3 to HF is 2:6 or 1:3.
This means that for every 1 mole of NH3, we will get 3 moles of HF.
So, to produce 4.00 moles of HF, we will need 4.00 moles / 3 moles per mole of NH3 = 1.33 moles of NH3.
b. To calculate the grams of F2 required to react with 1.50 moles of NH3, we can use the stoichiometry of the balanced equation.
From the balanced equation, we can see that the mole ratio of NH3 to F2 is 2:5.
This means that for every 2 moles of NH3, we will need 5 moles of F2.
So, for 1.50 moles of NH3, we will need 5 moles F2 / 2 moles NH3 * 1.50 moles NH3 = 3.75 moles of F2.
To convert moles of F2 to grams, we need to know the molar mass of F2, which is 2 x 19.00 g/mol = 38.00 g/mol.
So, the grams of F2 required to react with 1.50 moles of NH3 is 3.75 moles of F2 * 38.00 g/mol = 142.50 g of F2.
c. To calculate the grams of N2F4 that can be produced from 3.40 grams of NH3, we can use the stoichiometry of the balanced equation.
From the balanced equation, we can see that the mole ratio of NH3 to N2F4 is 2:1.
This means that for every 2 moles of NH3, we will produce 1 mole of N2F4.
First, let's convert 3.40 grams of NH3 to moles. The molar mass of NH3 is 1 x 14.01 g/mol + 3 x 1.01 g/mol = 17.03 g/mol.
So, 3.40 g of NH3 / 17.03 g/mol = 0.20 moles of NH3.
Now, using the mole ratio of NH3 to N2F4, we have 0.20 moles of NH3 * 1 mole of N2F4 / 2 moles of NH3 = 0.10 moles of N2F4.
To convert moles of N2F4 to grams, we need to know the molar mass of N2F4, which is 2 x 14.01 g/mol + 4 x 19.00 g/mol = 104.00 g/mol.
So, the grams of N2F4 that can be produced from 3.40 grams of NH3 is 0.10 moles of N2F4 * 104.00 g/mol = 10.40 g of N2F4.
Learn more about chemical equation here: https://brainly.com/question/26694427
#SPJ1
Balance the following equation:
NHa(g) + F2(g) - NaF4(g) + HF(g)
a. How many moles of each reactant are needed to produce 4.00 moles of HF?
b. How many grams of F2 are required to react with 1.50 moles of NH;?
c. How many grams of N2F4 can be produced when 3.40 grams of NHs reacts?
Answer:NH3: 4.00 moles
F2: 4.00 moles
Explanation:The balanced equation for the given chemical reaction is:
NH3(g) + F2(g) → NF3(g) + HF(g)
According to the balanced equation, 1 mole of NH3 reacts with 1 mole of F2 to produce 1 mole of NF3 and 1 mole of HF.
To produce 4.00 moles of HF, we need to determine how many moles of NH3 and F2 are required. Since the mole ratio between NH3 and HF is 1:1, we would need 4.00 moles of NH3. Similarly, since the mole ratio between F2 and HF is also 1:1, we would need 4.00 moles of F2 as well.
So, the answer is:
NH3: 4.00 moles
F2: 4.00 moles
1-A tennis ball travelling at a speed of 46 m/s with a mass of 58 g. Calculate its kinetic energy Ek=0.5mv2
2-A plane at a speed of 255 m/s with a mass of 2.15 × 105 kg. calculate its kinetic energy
3-A hot air balloon with a kinetic energy of 76 550 J and a mass of 1890 kg. Calculate its velocity
The tennis ball has a kinetic energy of around 56.8 J. The aircraft has a kinetic energy of around 4.43 x 10⁹ J. The hot air balloon travels at a speed of around 9.0 m/s.
A 750 kilogramme automobile travelling at a speed of 50.0 km/h has how much kinetic energy?How much effort must be put into slowing down a 750 kg automobile from 100 km/h to 50 km/h. We know that the of this automobile at 50.0 km/h is 72,300 Joules from the last example problem.
Ek = 0.5 x 0.058 kg x (46 m/s)²
Ek = 0.5 x 0.058 kg x 2116 m²/s²
Ek = 56.8468 J
Ek = 0.5mv²
Ek = 0.5 x 2.15 x 10⁵ kg x (255 m/s)²
Ek = 0.5 x 2.15 x 10⁵ kg x 65025 m²/s²
Ek = 4.433 x 10⁹ J
Ek = 0.5mv²
v = √(2Ek/m)
v = √(2 x 76550 J / 1890 kg)
v = √(81.011 J/kg)
v = 9.0 m/s (approx.)
To know more about energy visit:-
https://brainly.com/question/8630757
#SPJ1
How do you think the electrons, and the way the electrons are bonded or transfered,
affect how the two compounds dissolve?
Answer:
the electron will be drawn more toward the atom with the higher e lectronegativity resulting in a polar covalent bond.
Explanation:
When atoms of different elements share electrons through covalent bonding, the electron will be drawn more toward the atom with the higher e lectronegativity resulting in a polar covalent bond. When compared to ionic compounds, covalent compounds usually have a lower melting and boiling point, and have less of a tendency to dissolve in water.
What two salts have the same solubility at approximately 23 C?
Answer silver chloride (AgCl) and lead chloride (PbCl2).
Explanation:
Two salts that have the same solubility at approximately 23°C are silver chloride (AgCl) and lead chloride (PbCl2).
Both AgCl and PbCl2 have very low solubilities in water at room temperature, and their solubilities are similar at around 23°C. They are both sparingly soluble salts, meaning they dissolve only to a limited extent in water to form a saturated solution.
It's important to note that solubility can vary depending on the specific conditions, such as temperature, pressure, and presence of other substances. The solubility of salts can also be affected by factors such as pH and the presence of other ions in solution. Therefore, it's always best to consult reliable sources, such as reference tables or experimental data, for accurate solubility information at a given temperature.
The isotope Tl-208 undergoes β decay with a half-life of 3.1 min.
What is the decay constant for this process?
a.)
4.47 min⁻¹
b.)
2.15 min⁻¹
c.)
0.224 min⁻¹
d.)
0.031 min⁻¹
The decay constant for this process is
c.) 0.224 min⁻¹How to find the decay constantThe decay constant (λ) is related to the half-life (t1/2) by the following equation:
λ = ln(2) / t1/2
where
ln(2) is the natural logarithm of 2, which is approximately 0.693.
Substituting the given half-life of 3.1 min into the equation, we get:
λ = ln(2) / (3.1 min) ≈ 0.223 min^(-1)
Therefore, the decay constant for the β decay of Tl-208 is approximately 0.223 min^(-1).
Learn more about decay constant at
https://brainly.com/question/12699719
#SPJ1
Which element has an electron configuration of [Ne]3s²3p³?
neon
phosphorus
arsenic
nitrogen
Phosphorus (P4) and oxygen react to produce diphosphorus pentoxide. How many grams of diphosphorus pentoxide are produced from the reaction of 38.76 grams of oxygen with excess phosphorus? Round your answer to the hundredths of a gram. Do not include units. Use the atomic masses in this PERIODIC TABLE. DO NOT ROUND THESE MASSES IN YOUR CALCULATION.
The mass of diphosphorus pentoxide produced is: 549.47 g
What is mass?
Mass is a measure of the amount of matter in an object. It is typically measured in units of grams (g) or kilograms (kg). Mass is a scalar quantity and is different from weight, which is the force exerted on an object due to gravity and depends on both the mass of the object and the acceleration due to gravity.
The balanced chemical equation for the reaction between phosphorus and oxygen to produce diphosphorus pentoxide is:
[tex]4P[/tex] + [tex]5O_{2}[/tex] → [tex]2P_{4}O_{10}[/tex]
To solve the problem, we need to first calculate the amount of phosphorus required to react with 38.76 grams of oxygen. Since phosphorus is in excess, the amount of diphosphorus pentoxide produced will be limited by the amount of oxygen.
The molar mass of oxygen is 15.999 g/mol. Therefore, the number of moles of oxygen in 38.76 grams is:
38.76 g / 15.999 g/mol = 2.422 mol
According to the balanced equation, 5 moles of oxygen react with 4 moles of phosphorus to produce 2 moles of diphosphorus pentoxide. Therefore, the number of moles of phosphorus required is:
4/5 × 2.422 mol = 1.9376 mol
The molar mass of diphosphorus pentoxide is 283.886 g/mol. Therefore, the mass of diphosphorus pentoxide produced is:
1.9376 mol × 283.886 g/mol = 549.47 g
Rounding to the hundredths of a gram, the answer is:
549.47 g → 549.47
To know more about mass, visit:
https://brainly.com/question/13975439
#SPJ1
The table shows the number of charged particles in an ion.
Charged Particles
Charge on Particle Number of Particles
Positive 3
Negative 2
A negatively charged substance is brought near the ion. What will most likely happen?
The negatively charged ion will repel the substance.
The negatively charged ion will attract the substance.
The positively charged ion will repel the substance.
The positively charged ion will attract the substance.
Answer: three
Explanation:
The satellite image above shows the San Francisco area along the West Coast. What feature is marked by "X"?
A. A bay
B. A fresh water lake
C. A mountain
D. A volcano
What happens when a solid is dissolved into a liquid?
.
The structural layers of the sun are shown in the cross-sectional diagram. An image of six concentric circles is shown. The six layers thus formed are of varying thickness. The layers in order from inside out are labeled, A, B, C, D, E, F. Which layer represents the corona? C D E F
The outermost of the six sun layers with the letters A, B, C, D, E, and F, layer F in the cross-sectional figure symbolises the corona.
Is the corona of the sun referred to as such?The Sun's atmosphere's outermost region is called the corona. The brilliant brightness of the Sun's surface often obscures the corona. Without employing specialised equipment, it is challenging to see. A total solar eclipse, however, makes the corona visible.
What takes place within the corona layer?The term "corona" refers to the topmost region of the Sun's atmosphere. It rises hundreds of kilometres above the Sun's surface and gradually changes into the solar wind, which travels across our solar system.
To know more about sun layers visit:-
https://brainly.com/question/23930641
#SPJ1
Which statements best describe plasmas? Check all that apply.
• Plasmas have a definite volume.
• Plasmas can change shape.
• Plasmas contain ionized particles
• Plasmas are abundant on Earth.
• Plasmas are good insulators
The statement "Plasmas can change shape" and "Plasmas contain ionized particles" best describe plasmas.
What is plasmas?Plasma is a state of matter that is similar to gas but differs in that it contains ionized particles, which are atoms or molecules that have lost or gained one or more electrons. This results in a mixture of positively charged ions and negatively charged electrons, making plasma electrically conductive.
Plasma can be found in many natural phenomena such as lightning, stars, and the aurora borealis, and it is also used in various technological applications such as plasma TVs, fusion reactors, and fluorescent lights. Because of its unique properties, plasma has many interesting and useful applications in fields such as physics, chemistry, and engineering.
Learn about plasmas here https://brainly.com/question/950535
#SPJ1
Which statements accurately describe matter? Check all that apply.
Only living things are made up of matter.
Matter is made up of tiny particles called atoms.
Atoms were discovered in the twenty-first century.
Atoms cannot be divided and still retain the properties of its original state.
A single atom can be seen only with a standard microscope
The following statements accurately describe matter:
Matter is made up of tiny particles called atoms.
Atoms cannot be divided and still retain the properties of their original state.
What is Atom?
An atom is the basic unit of matter, consisting of a nucleus composed of protons and neutrons, surrounded by electrons in electron shells or energy levels. Atoms are the building blocks of all matter and are the smallest unit of an element that retains the chemical properties of that element.
The statement "Atoms cannot be divided and still retain the properties of their original state" refers to the concept of the indivisibility of atoms, as proposed by John Dalton in the early 19th century. According to Dalton's atomic theory, atoms are considered to be the smallest unit of matter that retains the properties of an element. In other words, atoms are considered to be indivisible and cannot be further broken down into smaller particles without losing their characteristic properties.
Learn more about Atom from the given link
https://brainly.com/question/6258301
#SPJ1
A student determines there are 5.45 mg of vitamin C in a 45.7 mL juice sample.
How many mg of vitamin C would there be in a standard serving of the juice?
A typical serving of the juice would provide about 29.8 milligrammes of vitamin C.
How is the vitamin C content in juice determined?Subtract the total amount of iodine drops from the quantity of drops required to produce 1 mg of vitamin C in the reference sample. For instance, if your reference sample needed 2 drops for every 1 mg of vitamin C and your test fruit needed 10 drops of iodine, the equation would be Per ounce of fruit juice, there are 5 mg of vitamin C (10/2=10).
We need to know the volume of a normal serving in order to determine the quantity of vitamin C in the juice. Let's presume that a serving size is 250 mL.
5.45 mg / 45.7 mL = x mg / 250 mL
5.45 mg * 250 mL = 45.7 mL * x
1362.5 mg/mL = 45.7 mL * x
x = 1362.5 mg / 45.7
x = 29.8 mg
To know more about vitamin C visit:-
https://brainly.com/question/30486670
#SPJ1
Which of the conditions is always true at equilibrium?
It's important to note that equilibrium is a dynamic state, meaning that while the conditions mentioned above are true, there may still be continuous microscopic fluctuations or changes within the system, but the macroscopic properties remain constant.
What is Equilibrium?
Equilibrium refers to a state of balance or stability in a system where there is no net change or overall tendency for change to occur. In various scientific disciplines, including physics, chemistry, and biology, equilibrium is a fundamental concept that describes the balance between opposing forces or processes.
Balance of forces: The net force acting on the system is zero. This means that the forces acting in opposite directions are balanced, and there is no overall acceleration of the system.
Balance of torques: The net torque (or moment) acting on the system is zero. This means that the torques acting in opposite directions are balanced, and there is no rotational acceleration of the system.
Learn more about Equilibrium from the given link
https://brainly.com/question/517289
#SPJ1
Which of the following represents beta decay
OA. Tc-TC+y
O B.
B. 14Gd→ 144Sm+ He
O C. 160Eu+e→ 169 Sm
62
O D.
D.
63
164Gd→ ¹6 Tb + e
160
65
The correct answer that represents beta decay is
D. 164Gd → 164Tb + e, What happens in beta decayIn beta decay, a neutron in the nucleus is converted into a proton, and an electron (or beta particle) and an antineutrino are emitted from the nucleus.
In this case, a neutron in the 164Gd nucleus is converted into a proton, and an electron is emitted from the nucleus, resulting in the production of 164Tb.
Option A is not a valid representation of any known type of radioactive decay.
Option B represents alpha decay, in which an alpha particle is emitted from the nucleus.
Option C represents electron capture, in which an electron is captured by the nucleus.
Learn more about beta decay at
https://brainly.com/question/27770519
#SPJ1
True/False: Paraffin wax (d = 0.910 g/cm3) would float in ethanol (d = 789 kg/L)
The claim that paraffin wax would float in ethanol (d = 789 kg/L) is accurate.
In ethanol, does paraffin wax float?A 40–50% aqueous solution would have a density that could be adjusted to be just below that of paraffin wax, while regular alcohol (ethanol) has a density of roughly 0.8. The wax would then begin to sink. Warming causes the wax's density to significantly decrease (more than ethanol does), causing it to float.
Does ethanol allow you to float?Even with your lungs completely expanded, you cannot float in 80-proof (or 40%) alcohol since your body weighs more than the booze and will sink if you stop swimming.
To know more about paraffin wax visit:-
https://brainly.com/question/16121848
#SPJ1
HELP PLEASE
In what ways is the lewis structure misleading regarding is charge distribution (near left) and when attempting to describe the bonding in this molecule using valence bond theory? How could you use hyperconjugation and donor/accepter interactions to better describe the bonding in the molecule?
The Lewis structure of SNF3 is misleading because it does not accurately represent the charge distribution in the molecule.
What is the Lewis structure of the molecule?
The Lewis structure of SNF3 shows that sulfur (S) is the central atom with three fluorine (F) atoms bonded to it and one lone pair of electrons. The Lewis structure suggests that each F atom is bonded to S with a single bond, and that S has a formal charge of +1.
In reality, the S atom in SNF3 has a trigonal pyramidal shape with a net dipole moment. This means that the electron density is not evenly distributed throughout the molecule. The electronegativity of F atoms is higher than that of S, so the F atoms pull electron density away from S, making it slightly positive and the F atoms slightly negative. This creates a partial negative charge on the F atoms and a partial positive charge on the S atom.
When attempting to describe the bonding in SNF3 using valence bond theory, the Lewis structure does not give an accurate representation of the actual bonding. In valence bond theory, the bonding in SNF3 is described as sp3 hybridization of the S atom and overlap of the hybrid orbitals with the 2p orbitals of the F atoms to form four sp3 hybrid orbitals.
Hyperconjugation and donor/acceptor interactions can be used to better describe the bonding in SNF3. Hyperconjugation involves the delocalization of electrons from a sigma bond to an empty or partially filled antibonding orbital. In SNF3, hyperconjugation can occur between the S-F bonds and the S lone pair, which can increase the strength of the S-F bonds.
Donor/acceptor interactions occur when there is overlap between the filled orbital of a donor atom and the empty or partially filled orbital of an acceptor atom. In SNF3, the S lone pair acts as a donor to the empty 3d orbital of F atoms, creating a weak dative bond.
Overall, the charge distribution in SNF3 is better described as a partially negative charge on the F atoms and a partially positive charge on the S atom, rather than the formal charge shown in the Lewis structure. Using hyperconjugation and donor/acceptor interactions can provide a more accurate description of the bonding in the molecule.
Learn more about Lewis structures at: https://brainly.com/question/20300458
#SPJ1
Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Refer to the ΔG°f values. 2C2H6(g)+7O2(g)⟶4CO2(g)+6H2O(g)
According to the question the standard change in Gibbs free energy is 2818.4 kJ/mol.
What is energy?The capacity to perform work is energy. It is a characteristic of all matter and can assume many different shapes. It exists in a variety of shapes, including those of light, heat, chemical, electrical, mechanical, and nuclear. Energy is the ability to accomplish work and is measured in joules, which are equivalent to the amount of work completed when one newton of force is applied over a one metre distance.
The following equation can be used to get the reaction's standard change in Gibbs free energy (ΔG°) at 25°C:
ΔG° = [4 ΔG°f ([tex]Co_2[/tex]) + 6 ΔG°f ([tex]H_2o[/tex])] - [2 ΔG°f ([tex]C_2H_6[/tex]) + 7 ΔG°f ([tex]o_2[/tex])]
At 25°C, ΔG°f ([tex]Co_2[/tex]) = -393.5 kJ/mol, ΔG°f ([tex]H_2o[/tex]) = -237.2 kJ/mol, ΔG°f ([tex]C_2H_6[/tex]) = -85.2 kJ/mol, and ΔG°f ([tex]o_2[/tex]) = 0 kJ/mol.
As a result, the typical variation in Gibbs free energy is:
ΔG° = [-393.5 kJ/mol × 4] + [-237.2 kJ/mol × 6] - [-85.2 kJ/mol × 2] - [0 kJ/mol × 7]
ΔG° = -2818.4 kJ/mol.
To learn more about energy, visit:
brainly.com/question/29339318
#SPJ1
2818.4 kJ/mol is the standard change in Gibbs free energy for the reaction at 25 °C.
What does the name Gibbs free energy mean?
Because it is readily accessible at all times, Gibb's free energy is known as free energy. If necessary, the reaction can obtain this energy without exerting any effort. Enthalpy and the system's product of temperature and entropy are added to determine the change in Gibb's free energy.
Enthalpy and entropy are combined into a single quantity known as Gibbs free energy, or G. The product of the system's temperature and entropy, added to the enthalpy, equals the change in free energy, or G.
2C2H6(g)+7O2(g)⟶4CO2(g)+6H2O(g)
ΔG° = [4 ΔG°f (CO2) + 6 ΔG°f (H2O)] - [2 ΔG°f (C2H6) + 7 ΔG°f (O2)]
At 25°C, ΔG°f (CO2) = -393.5 kJ/mol,
ΔG°f (H2O) = -237.2 kJ/mol,
ΔG°f (C2H6) = -85.2 kJ/mol,
and ΔG°f (O2) = 0 kJ/mol.
ΔG° = [-393.5 kJ/mol × 4] + [-237.2 kJ/mol × 6] - [-85.2 kJ/mol × 2] - [0 kJ/mol × 7] = -2818.4 kJ/mol.
To learn more about entropy use:
https://brainly.com/question/419265
#SPJ1
How much heat is released when 60.0 g of ethanol cools from 70 °C to 43 °C?
a) 1,600 J
b) 1500 J
c) 810 J
d) 750 J
The heat released is 1600 joules, so the correct option is the first one.
How much heat will be released?To calculate the heat released when 60.0 g of ethanol cools from 70 °C to 43 °C, we can use the formula for heat transfer:
q = m * C * ΔT
where:
q = heat transfer (in joules)m = mass of the substance (in grams)C = specific heat capacity of the substance (in J/(g°C))ΔT = change in temperature (in °C)Given:
Mass of ethanol (m) = 60.0 g
Specific heat capacity of ethanol (C) = 1.0 J/(g°C) (at constant pressure)
Change in temperature (ΔT) = Final temperature - Initial temperature = 43 °C - 70 °C = -27 °C
Note that the negative sign in ΔT indicates that heat is being released (i.e., the substance is cooling).
Plugging in the given values into the formula:
q = 60.0 g *1.0 J/(g°C) * (-27 °C)
q ≈ -1600 J
The negative sign is for notation, here we can see that the amount of heat is 1600 joules, so the correct option is the first one.
Learn more about heat at.
https://brainly.com/question/22741007
#SPJ1
Consider the reaction described by the chemical equation shown.
C2H4(g)+H2O(l)⟶C2H5OH(l)Δ∘rxn=−44.2 kJ
Use the data from the table of thermodynamic properties to calculate the value of Δ∘rxn
at 25.0 ∘C.
Δ∘rxn= ? J⋅K−1
Calculate Δ∘rxn.
Δ∘rxn= ? kJ
In which direction is the reaction, as written, spontaneous at 25 ∘C
and standard pressure?
reverse
both
neither
forward
The direction of the reaction, as written, spontaneous at 25 ∘C and standard pressure is reverse.
What is the direction of the reaction?
To calculate the value of Δ∘rxn at 25.0 ∘C, we can use the equation:
Δ∘rxn(T2) = Δ∘rxn(T1) + ΔH∘(products) - ΔH∘(reactants)
where;
T2 is the desired temperature (25.0 ∘C), T1 is the standard temperature (usually 25 ∘C), ΔH∘(products) is the enthalpy change of formation of the products, and ΔH∘(reactants) is the enthalpy change of formation of the reactants.Using the data from the table of thermodynamic properties, we can look up the enthalpy change of formation values for C2H4(g), H2O(l), and C2H5OH(l):
ΔH∘f(C2H4(g)) = 52.26 kJ/mol
ΔH∘f(H2O(l)) = -285.83 kJ/mol
ΔH∘f(C2H5OH(l)) = -277.69 kJ/mol
Substituting these values into the equation, we get:
Δ∘rxn(25.0 ∘C) = -44.2 kJ + (-277.69 kJ/mol) - (-52.26 kJ/mol)
Δ∘rxn(25.0 ∘C) = -44.2 kJ - (-277.69 kJ/mol) + 52.26 kJ/mol
Δ∘rxn(25.0 ∘C) = -44.2 kJ + 277.69 kJ/mol + 52.26 kJ/mol
Δ∘rxn(25.0 ∘C) = 233.23 kJ/mol
So the value of Δ∘rxn at 25.0 ∘C is 233.23 kJ/mol.
In which direction is the reaction, as written, spontaneous at 25 ∘C and standard pressure?
Since the value of Δ∘rxn at 25.0 ∘C is positive (233.23 kJ/mol), the reaction as written is not spontaneous at this temperature and standard pressure. The correct answer is "reverse."
Learn more about enthalpy change here: https://brainly.com/question/16387742
#SPJ1
You have 2.5 moles of NH2. How many moles of H2 are needed to fully use the NH2?
NH₂ can be found in various molecules, such as ammonia (NH₃) or hydrazine (N₂H₄), but is not a specific compound or molecule.
What are the number of moles of hydrogen needed to fully use the NH2?The chemical equation for the reaction of NH₂ and H₂ is:
NH₂ + 2H₂ -> 2NH₃
NH₃ is the chemical formula for ammonia, which is a compound made up of one nitrogen atom and three hydrogen atoms. It is a colorless gas with a pungent odor, and it is commonly used in the production of fertilizers, cleaning products, and various other chemicals.
From the balanced equation:
1 mole of NH₂ reacts with 2 moles of H₂ to produce 2 moles of NH₃
Therefore, to fully use 2.5 moles of NH₂, we would need 2.5 x 2 = 5 moles of H₂.
Learn more about ammonia here:
https://brainly.com/question/14672082
#SPJ1
At 25 ∘C
, the equilibrium partial pressures for the reaction
A(g)+2B(g)↽−−⇀C(g)+D(g)
were found to be A=5.63
atm, B=5.00
atm, C=5.47
atm, and D=5.63
atm.
What is the standard change in Gibbs free energy of this reaction at 25 ∘C ?
Δ∘rxn= ? kJmol
The reaction's equilibrium partial pressures are at 25 °C. The calculated PA value for 3A(g)+4B(g)2C(g)+3D(g) is 5.56 atm.
Explanation:
For elements within their standard condition, G0f G f 0 is taken to be zero. As a result, the reaction's standard modification of Gibb's free energy around 25 degrees Celsius becomes 98.746 kJ.
What do you mean by equilibrium?
It is a situation in which opposite forces or behaviors are in equilibrium and can be either static (like when forces act on a body and the resultant is zero) of dynamic. (as in a reversible chemical reaction when the rates of reaction in both directions are equal)
What is equilibrium, and what is its equation?
This static as well as dynamic equilibrium of every one of the the external and internal variables in the system is described by the equilibrium equation. The equilibrium equation in the static situation is. [6.23] K denotes the stiffness matrix of the system, u is the vector carrying nodal displacements, where F denotes outside forces.
To know more about equilibrium visit:
https://brainly.com/question/30694482
#SPJ1
Can someone help me with this I am too lazy to work it out
Answer:
acid +metal ----->salt +hydrogen
16) Select the best answer.
Round the answer to the correct number of significant figures.
10.05
2.8899 = 29.043495
29.0435
29.04
29.043
29
29 is not the best answer depends on the context and the rules for significant figures.
What is best answer?
The best answer depends on the context and the rules for significant figures. If we assume that we need to round to three significant figures:
10.05 has three significant figures, so it is already rounded correctly.2.8899 has four significant figures, so we need to round it to three significant figures. The third significant figure is 9, which is greater than 5, so we round up the second significant figure (which is 8) to 9. Therefore, 2.8899 rounded to three significant figures is 2.89.29.0435 has five significant figures, so we need to round it to three significant figures. The third significant figure is 0, which is less than 5, so we do not round up the second significant figure (which is 4). Therefore, 29.0435 rounded to three significant figures is 29.0.29.04 has four significant figures, so it is already rounded correctly.29.043 has four significant figures, so we need to round it to three significant figures. The third significant figure is 3, which is less than 5, so we do not round up the second significant figure (which is 4). Therefore, 29.043 rounded to three significant figures is 29.0.29 has one significant figure, so it is not rounded correctly to three significant figures.Therefore, 29 is not the best answer.
To know more about significant figures, visit:
https://brainly.com/question/30465808
#SPJ1
What is the Molality of a solution in which
25 g of sodium chloride is dissolved in 2.0
kg of water?
The molality of a solution is determined by the amount of solute (in moles) and the mass of the solvent (in kilograms). To convert the mass of NaCl to moles, the molar mass of NaCl is 58.44 g/mol. The number of moles of NaCl is 25 g / 58.44 g/mol = 0.427 mol. The molality of the solution is 0.213 mol/kg.
What is molality?The amount of a solute dissolved in a solvent is indicated by the chemical term "molality," which is commonly defined in terms of moles of solute per kilogramme of solvent. Because it takes into account variations in the volume of the solution owing to temperature and pressure, it differs from molarity, which quantifies the quantity of a solute in moles per litre of solution.
To calculate the molality of a solution, we need to know the amount of solute (in moles) and the mass of the solvent (in kilograms).
In this case, we are given:
Mass of solute (NaCl) = 25 g
Mass of solvent (water) = 2.0 kg
To calculate the amount of solute in moles, we need to convert the mass of NaCl to moles using its molar mass:
Molar mass of NaCl = 58.44 g/mol
Number of moles of NaCl = (25 g) / (58.44 g/mol) = 0.427 mol
Now we can calculate the molality of the solution:
Molality = (number of moles of solute) / (mass of solvent in kg)
Molality = (0.427 mol) / (2.0 kg) = 0.213 mol/kg
Therefore, the molality of the solution is 0.213 mol/kg.
To know more about molality, visit
brainly.com/question/26921570
#SPJ1
2. A student prepared a 0.500 M solution of an unknown acid, and measured the pH as 3.56 at 25°C. (a) What is the acid dissociation constant of this unknown acid? (b) What percentage of acid is ionised in this solution
To solve this problem, we can use the following equation that relates the pH of a solution to the acid dissociation constant (Ka) and the concentration of the acid:
pH = -log[H+]
where [H+] is the concentration of hydrogen ions in the solution.
(a) To find the Ka of the unknown acid, we need to first find the concentration of hydrogen ions in the solution. We can do this by taking the inverse of the pH and converting it to a concentration:
[H+] = 10^(-pH) = 10^(-3.56) = 2.17 × 10^(-4) M
What is the acid dissociation constant of this unknown acid?The acid dissociation constant (Ka) can then be calculated using the equation:
Ka = [H+][A-]/[HA]
where [A-] is the concentration of the conjugate base of the acid and [HA] is the concentration of the undissociated acid. Since we don't know the values of these concentrations, we need to use the fact that the solution is 0.500 M to make an assumption about the degree of dissociation (α) of the acid:
α = [A-]/[HA]
Since the solution is not extremely dilute, we can assume that the degree of dissociation is small and that the concentration of the undissociated acid is approximately equal to the initial concentration of the acid. Therefore, we can write:
[A-] ≈ 0.500α
[HA] ≈ 0.500 - 0.500α
Substituting these expressions into the equation for Ka, we get:
Ka = [H+][A-]/[HA] ≈ ([H+][A-])/0.500α
≈ ([H+]/Ka)(0.500α)/(1-α)
Solving for Ka, we get:
Ka ≈ H+/0.500α
Substituting the values we have calculated, we get:
Ka ≈ (2.17 × 10^(-4))(1-α)/(0.500α) = 4.37 × 10^(-5)
Therefore, the acid dissociation constant of the unknown acid is approximately 4.37 × 10^(-5).
(b) To find the percentage of acid that is ionized in the solution, we can use the equation:
α = [A-]/[HA] = 10^(-pKa + pH)/(1 + 10^(-pKa + pH))
where pKa is the negative logarithm of the acid dissociation constant. Substituting the values we have calculated, we get:
α = 10^(-(-4.36) + 3.56)/(1 + 10^(-(-4.36) + 3.56)) ≈ 0.008
Therefore, the percentage of acid that is ionized in the solution is approximately 0.8%.
Learn more about dissociation constant from
https://brainly.com/question/30930515
#SPJ1
To solve this problem, we can use the following equation that relates the pH of a solution to the acid dissociation constant (Ka) and the concentration of the acid:
pH = -log[H+]
where [H+] is the concentration of hydrogen ions in the solution.
(a) To find the Ka of the unknown acid, we need to first find the concentration of hydrogen ions in the solution. We can do this by taking the inverse of the pH and converting it to a concentration:
[H+] = 10^(-pH) = 10^(-3.56) = 2.17 × 10^(-4) M
What is the acid dissociation constant of this unknown acid?The acid dissociation constant (Ka) can then be calculated using the equation:
Ka = [H+][A-]/[HA]
where [A-] is the concentration of the conjugate base of the acid and [HA] is the concentration of the undissociated acid. Since we don't know the values of these concentrations, we need to use the fact that the solution is 0.500 M to make an assumption about the degree of dissociation (α) of the acid:
α = [A-]/[HA]
Since the solution is not extremely dilute, we can assume that the degree of dissociation is small and that the concentration of the undissociated acid is approximately equal to the initial concentration of the acid. Therefore, we can write:
[A-] ≈ 0.500α
[HA] ≈ 0.500 - 0.500α
Substituting these expressions into the equation for Ka, we get:
Ka = [H+][A-]/[HA] ≈ ([H+][A-])/0.500α
≈ ([H+]/Ka)(0.500α)/(1-α)
Solving for Ka, we get:
Ka ≈ H+/0.500α
Substituting the values we have calculated, we get:
Ka ≈ (2.17 × 10^(-4))(1-α)/(0.500α) = 4.37 × 10^(-5)
Therefore, the acid dissociation constant of the unknown acid is approximately 4.37 × 10^(-5).
(b) To find the percentage of acid that is ionized in the solution, we can use the equation:
α = [A-]/[HA] = 10^(-pKa + pH)/(1 + 10^(-pKa + pH))
where pKa is the negative logarithm of the acid dissociation constant. Substituting the values we have calculated, we get:
α = 10^(-(-4.36) + 3.56)/(1 + 10^(-(-4.36) + 3.56)) ≈ 0.008
Therefore, the percentage of acid that is ionized in the solution is approximately 0.8%.
Learn more about dissociation constant from
brainly.com/question/30930515
#SPJ1
2AI + 6HCI=2AlCl3 + 3H₂
3. Aluminum reacts with HCI to produce aluminum chloride (AICI3) and hydrogen gas (H₂).
Calculate the number of moles of HCI required to react with 0.62 moles of Al.
3.0 moles of [tex]Al[/tex] can fully react with hydrogen chloride to produce 4.5 moles of [tex]H_{2}[/tex]. Thus, 0.93 moles will be produced by 0.62 moles of [tex]Al[/tex].
STOICHIOMETRYBased on this inquiry, how does aluminum react with hydrogen chloride to produce aluminum chloride and hydrogen gas[tex]Al +6HCl= AlCl_{3} +3H_{2}[/tex]According to this equation, 3 moles of hydrogen gas are produced during the reaction of 2 moles of aluminum ([tex]Al[/tex]).As a result, 3 moles of aluminum will result in 3 3 2 = 4.5 moles of hydrogen gas.As a result, the entire reaction of 3.0 moles of [tex]Al[/tex]with hydrogen chloride can produce 4.5 moles of [tex]H_{2}[/tex].The proportion of reactants to products before, during, and after chemical processes is known as stoichiometry.For more information on stoichiometry kindly visit to
https://brainly.com/question/19484482
#SPJ1
Is V(SO4)2 ionic or covalent?
Since vanadium is a transition metal and sulfate is an anion, we can insist that V(SO4)2
is an ionic compound.
Answer:
V(SO4)2 is ionic
Explanation:
In this compound, Vanadium (V) is a transition metal with an oxidation state of +5, and sulfate (SO4) is a polyatomic ion with a charge of -2. The compound is formed by the transfer of two electrons from each sulfur atom to the vanadium atom. This results in the formation of two V3+ cations and one SO42- anion, which combine to form V(SO4)2.
Ionic compounds are formed by the transfer of electrons between atoms or ions, resulting in the formation of positively charged cations and negatively charged anions. These oppositely charged ions are held together by strong electrostatic forces, forming a crystalline lattice structure.
In conclusion, V(SO4)2 is an ionic compound formed by the transfer of electrons from the sulfate ion to the vanadium ion.
40 grams of KCl are dissolved in 100 mL of water at 45C.
How many additional grams of
KCI are needed to make the solution saturated at 80 C?
40 grams of KCl are dissolved in 100 mL of water at 45C. 5g of additional grams of KCI are needed to make the solution saturated at 80 C as the solubility of KCl is 45g/ml
A uniform combination of a number of solutes within a solvent is referred to as a solution. One frequent illustration of a Solution is adding sugar cubes into your cup of tea and coffee. Solubility is the quality that makes sugar molecules more soluble.
In water, potassium chloride (KCl) dissolves. Its water solubility, like that of all other solutes, depends on temperature. The solubility of a salt increases as the solvent's temperature rises. This is fairly simple to experience with sugar. 40 grams of KCl are dissolved in 100 mL of water at 45C. 5g of additional grams of KCI are needed to make the solution saturated at 80 C as the solubility of KCl is 45g/ml.
To know more about solubility, here:
https://brainly.com/question/29661360
#SPJ1