what volume of SO3 would be produced by complete reaction of 100cm3 of HO2 with O2?

Answers

Answer 1

The volume of [tex]SO_{3}[/tex] would be produced by complete reaction of 100cm3 of [tex]H_{2}O[/tex]with [tex]O_{2}[/tex] is at STP is 60.03L.

Volume

22.4 L divided by 2.68 moles per mole yields 60.03 L [tex]SO_{3}[/tex].

describing the elements contributing to the response,

[tex]2SO_{2(g)}+ O_{2} = 2SO_{3}[/tex]

In this instance, [tex]SO_{3}[/tex] and [tex]O_{2}[/tex] have a mole ratio of 2:1. Assume the reaction takes place at STP, where 1 mole of any gas has a volume of 22.4 L. Consequently, 30 [tex]dm^{3}[/tex]of [tex]O_{2}[/tex] (1 dm3 = 1 L) equals 30 L of [tex]O_{2}[/tex] and 30 L/22.4 L times 1 mole equals 1.34 moles of [tex]O_{2}[/tex].

According to stoichiometry, when 1.34 moles of [tex]O_{2}[/tex]are reacted with [tex]SO_{2}[/tex], 2.68 moles of [tex]SO_{3}[/tex] are created, or 2/1 x 1.34 moles of [tex]SO_{3}[/tex].

This means that the amount of [tex]SO_{3}[/tex]produced will be (2.68 moles/1 mole) x 22.4 L = 60.03 L [tex]SO_{3}[/tex].

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Related Questions

Can someone help me with this I am too lazy to work it out

Answers

Answer:

acid +metal ----->salt +hydrogen

Calculate the density of Sulfur dioxide gas at a temperature of 15oC and pressure of 300 torr. Convert to atm

Answers

The density of sulfur dioxide gas at a temperature of 15°C and pressure of 300 torr is 0.001022 g/cm³, or 0.001022 g/mL, or 1.022 kg/m³, or 0.01022 g/L when converted to atm.

What is density?

To calculate the density of sulfur dioxide gas at a temperature of 15°C and a pressure of 300 torr, we can use the ideal gas law:

PV = nRT

where P is the pressure in atmospheres, V is the volume in liters, n is the number of moles, R is the ideal gas constant (0.08206 L·atm/(mol·K)), and T is the temperature in Kelvin.

First, we need to convert the given temperature of 15°C to Kelvin:

T = 15°C + 273.15 = 288.15 K

Next, we can rearrange the ideal gas law to solve for the number of moles:

n = PV/RT

where we can use the given pressure of 300 torr and convert it to atm by dividing by 760 torr/atm:

P = 300 torr / 760 torr/atm = 0.3947 atm

Substituting the values into the equation, we get:

n = (0.3947 atm) V / (0.08206 L·atm/(mol·K) × 288.15 K)

Now, we can use the molar mass of sulfur dioxide, which is 64.06 g/mol, to convert the number of moles to mass:

mass = n × molar mass

Finally, we can calculate the density of sulfur dioxide gas using the mass and volume:

density = mass / V

To convert the density from g/L to g/cm³, we divide by 1000.

Putting it all together, we get:

n = (0.3947 atm) V / (0.08206 L·atm/(mol·K) × 288.15 K)

n = 0.01595 V

mass = n × molar mass = 0.01595 V * 64.06 g/mol = 1.022 gV

density = mass / V = 1.022 gV / V = 1.022 g/L = 0.001022 g/cm³

Therefore, the density of sulfur dioxide gas at a temperature of 15°C and pressure of 300 torr is 0.001022 g/cm³, or 0.001022 g/mL, or 1.022 kg/m³, or 0.01022 g/L when converted to atm.

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Complete question is: The density of Sulfur dioxide gas at a temperature of 15oC and pressure of 300 torr is 0.01022 atm.

When you balance the equation Ca(OH)₂ + H₃PO₄ ---> Ca₃(PO₄)₂ + H₂O, what is the coefficient of calcium phosphate?


a.)
1
b.)
3
c.)
2
d.)
6

Answers

The answer is A --------

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
?

Answers

The standard change in Gibbs free energy of the reaction at 25 ∘C is -1.69 kJ/mol.

What is standard change?

To find the standard change in Gibbs free energy of the reaction, we need to use the following equation:

ΔG° = -RT ln(K)

where ΔG° is the standard change in Gibbs free energy, R is the gas constant (8.314 J/mol·K), T is the temperature in Kelvin (25 °C = 298 K), and K is the equilibrium constant.

To find K, we need to use the equilibrium partial pressures:

K = (PC × PD) / (PA × PB²)

where PA, PB, PC, and PD are the equilibrium partial pressures of A, B, C, and D, respectively.

Substituting the values, we get:

K = (5.47 atm × 5.63 atm) / (5.63 atm × (5.00 atm)²)

K = 0.6176

Now we can calculate the standard change in Gibbs free energy:

ΔG° = -RT ln(K)

ΔG° = -(8.314 J/mol·K) × (298 K) × ln(0.6176)

ΔG° = -1,690 J/mol or -1.69 kJ/mol

Therefore, the standard change in Gibbs free energy of the reaction at 25 ∘C is -1.69 kJ/mol.

What is free energy?

Free energy, also known as Gibbs free energy, is a thermodynamic quantity that represents the amount of energy in a system that is available to do work at a constant temperature and pressure. It is denoted by the symbol G and is expressed in units of joules (J) or calories (cal).

In simple terms, free energy is the energy that can be used to do work. It is defined by the equation:

ΔG = ΔH - TΔS

where ΔH is the change in enthalpy (heat content) of the system, ΔS is the change in entropy (disorder) of the system, and T is the absolute temperature in Kelvin.

If ΔG is negative, the reaction is spontaneous and can proceed without the input of external energy. If ΔG is positive, the reaction is non-spontaneous and requires energy input to proceed. If ΔG is zero, the system is at equilibrium.

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Question 5(Multiple Choice Worth 3 points)
(07.02 LC)

The substances below are listed by increasing specific heat capacity value. Starting at 30.0 °C, they each absorb 100 kJ of thermal energy. Which one do you expect to increase in temperature the least?

a) Cadmium, 0.230 J/(g °C)
b) Sodium, 1.21 J/(g °C)
c) Water, 4.184 J/(g °C)
d) Hydrogen, 14.267 J/(g °C)

Answers

Component form of the vector v is as follows: 4 3 1.5 1 Using the standard basis vectors I and j), express the vector w as follows: 3 two 1 4 pp . 1 3 w 3.5 C. V plus w= d. Determine the vector v's magnitude

What does "vector" mean?

Latin word for "carrier" is "vector." Point A is transported to point B by vectors. The orientation of the vectors AB is the direction in which point A is moved in relation to point B, and the amplitude of the vector is the width of the line connecting the two locations A and B. The terms Euclidean vectors and spatial vectors are also used to refer to vectors.

A vector space is what?

A vector space, also known as a linear space, is a collection of things called vectors that can be added to and multiplied ("scaled") by figures called scalars in the fields of mathematics, physics, and engineering.

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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​

Answers

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%.

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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%.

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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

Answers

The decay constant for this process is

c.) 0.224 min⁻¹

How to find the decay constant

The 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).

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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

Answers

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."

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Please THANKS FOR WHO EVER WILL ANSWER THESE 14

Answers

The above is about the movement of lithospheric plates. See explanation and attached image for details.

What are the process of lithospheric plates movement?

The movement of lithospheric plates is driven by convection currents in the Earth's mantle, which are caused by heat generated from the Earth's core. These currents cause the lithospheric plates to move, and the motion can result in a variety of geological phenomena, including earthquakes, volcanic activity, and the formation of mountain ranges and oceanic trenches.

There are three main types of plate boundaries, and each one results in a different type of movement of lithospheric plates:

Divergent Boundaries: At divergent boundaries, lithospheric plates move away from each other. This movement is caused by the upwelling of hot material from the mantle, which pushes the plates apart. As the plates move away from each other, magma rises up to fill the gap between them, creating new crust. Divergent boundaries are where new oceanic crust is formed.

Convergent Boundaries: At convergent boundaries, lithospheric plates move towards each other. There are three types of convergent boundaries: oceanic-oceanic, oceanic-continental, and continental-continental. At oceanic-oceanic and oceanic-continental convergent boundaries, one plate is forced beneath the other, creating a subduction zone. This movement is caused by the sinking of a denser plate beneath a less dense plate. As the denser plate sinks, it melts and can trigger volcanic activity. At continental-continental convergent boundaries, the plates are too buoyant to subduct, so they instead buckle and push up, forming mountain ranges.

Transform Boundaries: At transform boundaries, lithospheric plates move past each other. This movement is caused by the lateral movement of the convection currents in the mantle. Transform boundaries can create large faults, which can lead to earthquakes.

Overall, the movement of lithospheric plates is a complex and dynamic process, driven by the movement of material within the Earth's mantle.

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What is the Molality of a solution in which
25 g of sodium chloride is dissolved in 2.0
kg of water?

Answers

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.

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6. What is the pH of a 0.25 M solution of NH4Cl? [Kb(NH3) = 1.8  10–5

Answers

The Ammonium Chloride solution at 0.25 M has a pH of 2.67.

Why is the pH of Ammonium Chloride below 7?

As a result, the weak basic (Chlorine) in the solution is overpowered by the conjugate acid (Ammonium cation), making the solution mildly acidic. According to the equation pH =log[Hydrogen ion], an acidic solution has a pH lower than 7. Aqueous ammonium chloride solution has a pH that is less than 7.

Ammonium cation + Water ⇌ Nitrogen trihydride + Hydronium ion

Kb = [Nitrogen trihydride][Hydronium ion] / [Ammonium cation]

[Nitrogen trihydride] = [Hydronium ion] = x

[Ammonium cation] = 0.25 - x

Kb = [Nitrogen trihydride][Hydronium ion] / [Ammonium cation]

1.8 × 10–5 = x² / (0.25 - x)

1.8 × 10–5 = x² / 0.25

x² = 4.5 × 10–6

x = 2.12 × 10–3

pH = -log[Hydronium ion] = -log(2.12 × 10–3) = 2.67

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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.

Answers

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.

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Which state of matter - solid, liquid, or gas- tends to have unique factors (different from the other two) to consider when discussing solubility

Answers

The state of matter that tends to have unique factors to consider when discussing solubility compared to the other two states (solid and gas) is the liquid state.

Which state has unique factors?

Solubility refers to the ability of a substance (solute) to dissolve in a particular solvent to form a homogeneous mixture (solution). Various factors can affect the solubility of a substance, including temperature, pressure, and the nature of the solute and solvent.

In the case of liquids, the unique factor to consider when discussing solubility is often temperature. The solubility of many solid solutes in liquids generally increases with increasing temperature. This is because higher temperatures provide more energy to break the intermolecular forces between solute particles, allowing them to disperse more evenly throughout the solvent.

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20. Calculate the mole fractions (X) of each compound in each of the following solutions:

a. 19.4 g of H2SO4 in 0.251 L of H20 (density of water is 1.00 g/mL)

b.35.7 g of KBr in 16.2 g of water

C.233 g of CO2 in 0.409 L of water

Answers

[tex]CO_{2}[/tex]The following compounds' mole fractions (X) are (a)0.986 (b)0.750 (c)0.811 for the given solutions.

How can the mole fraction of 19.4 g of H2SO4 in 0.251 L of water be determined?

[tex]H_{2}SO_{4}[/tex] mass is 19.4 g.

[tex]H_{2}SO_{4}[/tex]'s molecular weight is 98.08 g/mol.

It's molecular weight is 19.4 g/98.08 g/mol, or 0.1979 mol.

Density times volume is 1.00 g/mL times 0.251 L and 251 g for water mass.

[tex]H_{2} O[/tex] has a molecular weight of 18.02 g/mol.

Water moles are equal to 251 g / 18.02 g/mol, or 13.93 mol.

The solution's total moles are equal to 0.1979 mol plus 13.93 mol, or 14.13 mol.

Sulphuric Acid's mole fraction is equal to 0.1979 mol/14.13 mol, or 0.014.

Water mole fraction is equal to 13.93 mol / 14.13 mol, or 0.986 mol.

How can the mole fraction of 35.7 g of KBr in 16.2 g of water be determined?

KBr's mass is 35.7 g.

KBr has a molecular weight of 119 g/mol.

The formula for KBr is 35.7 g/119 g/mol, which equals 0.300 mol.

16.2 g of water in mass

Water has a molecular weight of 18.02 g/mol.

Water moles are equal to 16.2 g / 18.02 g/mol, or 0.899 mol.

The solution has a total of 1.199 moles (0.300 mol + 0.899 mol).

The mole fraction of KBr is equal to 0.300 mol/1.199 mol, or 0.250

Water mole fraction is equal to 0.899 mol / 1.199 mol, or 0.750 moles.

How can the mole fraction of 233 g of CO2 in 0.409 L of water be determined?

[tex]CO_{2}[/tex] mass = 233 g

It has a molecular weight of 44.01 g/mol.

Its moles are equal to 233 g / 44.01 g/mol, or 5.291 mol.

Water volume equals 0.409 L.

Water has a molecular weight of 18.02 g/mol.

(density × volume) / molecular weight (1.00 g/mL 409 mL) / 18.02 g/mol = 22.71 mol = number of moles of water

The solution's total moles are equal to 5.291 mol plus 22.71 mol, or 28.00 mol.

[tex]CO_{2}[/tex] mole fraction = 5.291 moles / 28.00 moles = 0.189

[tex]H_{2} O[/tex] mole fraction is 22.71 mol/28.00 mol, or 0.811 moles.

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If the volume of a gas at -40°C is double to 80 L what is the final temperature in degrees Celsius?

Answers

The final temperature is -160°C

To solve this problem

We can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P₁V₁)/T₁ = (P₂V₂)/T₂

Where

P₁, V₁, and T₁ are the initial pressure, volume, and temperature of the gas, and P₂, V₂, and T₂ are the final pressure, volume, and temperature of the gas

In this case, we can assume that the pressure of the gas is constant, since it is not given in the problem statement. So we can simplify the equation to:

(V₁/T₁) = (V₂/T₂)

Where

V₁ and T₁ are the initial volume and temperature V₂ and T₂ are the final volume and temperature

We are given that the initial volume (V₁) is 80 L and the final volume (V₂) is twice that, or 160 L. We are also given that the initial temperature (T₁) is -40°C. To find the final temperature (T₂), we can plug these values into the equation:

(V₁/T₁) = (V₂/T₂)

(80 L)/(-40°C) = (160 L)/T₂

Simplifying:

-2 L/°C = (160 L)/T₂

Multiplying both sides by -1°C/2 L (the reciprocal of -2 L/°C):

1/2 = (T₂)/(160 L) x (-1°C/2 L)

1/2 = -T₂/320

Multiplying both sides by -1 to isolate T₂:

-1/2 = T₂/320

T₂ = -160°C

Therefore, the final temperature is -160°C.

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What two salts have the same solubility at approximately 23 C?

Answers

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.

Please help me
Define acid.
Mention four products of destructive distillation of coal.
In a tabular, highlight two differences between diamond and graphite.
List four types of salt.
Outline two physical properties of a base.

Answers

1. An acid is a substance that produces hydrogen ions, H +(aq), when dissolved in water


4. acidic salt, basic salt, neutral salt, and double salt

I only know the two questions not the rest sorry

im struggling

What quantity of heat (in kJ) would be required to convert 13.4 g of ice to water at 0.00 °C? (∆Hfus = 6.01 kJ/mol for water)

Answers

Around 80.5 KJ

Multiply Heat of Fusion and Mass to get the q value.

Which element has an electron configuration of [Ne]3s²3p³?


neon

phosphorus

arsenic

nitrogen

Answers

The element with an electron configuration of [Ne]3s²3p³ is phosphorus (P).

What happens when a solid is dissolved into a liquid?
.

Answers

The solid has broken down into pieces so small that its particles spread all throughout the new mixture

Is V(SO4)2 ionic or covalent?

Answers

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.

CHALLENGE The circles below represent of the large circle, and multiply it by 30. That Earth and the moon. Measure the diameter would be the correct distance from Earth to the moon at this scale. Draw the two circles in the space provided. Use the correct distance you found.● = Earth ●=moon ​

Answers

To draw the two circles, we would need to draw a smaller circle with a diameter of 2,532.5 miles (representing the moon) and a larger circle with a diameter of 75,974.4 miles (representing the Earth) that is 30 times larger than the smaller circle.

What is the explanation for the above response?

If we assume that the larger circle represents the Earth, then the diameter of the Earth would be 30 times the diameter of the smaller circle representing the moon. Let's say that the diameter of the smaller circle is x. Then the diameter of the larger circle (Earth) would be 30 times x or 30x.

To find the correct distance from Earth to the moon at this scale, we need to know the actual distance from Earth to the moon, which is approximately 238,855 miles or 384,400 kilometers. If we divide this distance by the scale factor of 30, we get:

238,855 miles / 30 = 7,961.8 miles

Therefore, the diameter of the smaller circle (moon) would be approximately 7,961.8 miles / π = 2,532.5 miles (rounded to one decimal place). And the diameter of the larger circle (Earth) would be 30 times that or 75,974.4 miles

So, to draw the two circles, we would need to draw a smaller circle with a diameter of 2,532.5 miles (representing the moon) and a larger circle with a diameter of 75,974.4 miles (representing the Earth) that is 30 times larger than the smaller circle.

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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

Answers

The correct answer that represents beta decay is

D. 164Gd → 164Tb + e,

What happens in beta decay

In 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.

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In the Periodic Table below, shade all the elements for which the neutral atom has an outer electron configuration of ms2nd2, where n and m are integers, and =m+n1.

Answers

The elements that have an outer electron configuration of ms2nd2 are located in the d-block of the periodic table and include some of the transition metals and lanthanides.

What is the periodic table?

To determine which elements in the periodic table have this outer electron configuration, you can look at the position of the d-block elements in the table. The d-block elements are located in the middle of the table and include the transition metals. These elements have partially filled d orbitals, which can accommodate up to 10 electrons.

Elements in the d-block with an atomic number of 21 through 30 (scandium through zinc) have an outer electron configuration of d10s2 and do not fit the ms2nd2 configuration. However, elements in the d-block with an atomic number of 39 through 48 (yttrium through cadmium) have an outer electron configuration of d10s2p1 and can have the ms2nd2 configuration by removing the single electron in the p orbital. Elements in the d-block with an atomic number of 57 through 80 (lanthanum through mercury) also have the possibility of having an outer electron configuration of ms2nd2.

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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?

Answers

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.

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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

Answers

probably option A
A bag because it broad inlet of the sea where the land curves inwards

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

Answers

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.

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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.

Answers

The answer is D. It’s positively charged because there are more positive than negative ions and remember opposites always attract because it wants to be balanced, attracting the negative ion.

Answer: three

Explanation:

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

Answers

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.)

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For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species.

For the reaction

N2(g)+3H2(g)↽−−⇀2NH3(g)

the standard change in Gibbs free energy is Δ°=−32.8 kJ/mol
. What is ΔG for this reaction at 298 K when the partial pressures are N2=0.350 atm
, H2=0.300 atm
, and NH3=0.750 atm
?

Answers

We can use the following equation to calculate the Gibbs free energy change at non-standard conditions:

ΔG = Δ°G + RT ln(Q)

where Δ°G is the standard Gibbs free energy change, R is the gas constant (8.314 J/mol-K), T is the temperature in Kelvin, and Q is the reaction quotient.

First, we need to calculate Q for the given partial pressures:

Q = (P(NH3))^2 / (P(N2) * P(H2)^3)
= (0.750 atm)^2 / (0.350 atm * 0.300 atm^3)
= 4.08

Next, we can substitute the values into the equation:

ΔG = -32.8 kJ/mol + (8.314 J/mol-K * 298 K) * ln(4.08)
= -32.8 kJ/mol + (2471 J/mol) * 1.407
= -32.8 kJ/mol + 3476 J/mol
= -29.3 kJ/mol

Therefore, the Gibbs free energy change for the reaction at 298 K and the given partial pressures is -29.3 kJ/mol.
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