To calculate T2:
ln(5) = (53.11*10^3 J/mol)/(8.314 J/mol.K) * (1/293 - 1/T2)
T2 = (53.1110^3 J/mol)/(8.314 J/mol.Kln(5)) + (1/293)^-1
T2 = 674.9 K
Therefore, the temperature at which the vapour pressure of the substance is 5 times higher than it was at 293 K is 674.9 K.
What do you mean by heat of vaporization?
The heat of vaporization is the energy required to convert one mole of a substance from the liquid to the gaseous state. The vapor pressure of a substance is the pressure exerted by its vapor when in equilibrium with its liquid form at a given temperature.
What are the properties of vaporization?Vaporization is the process of transforming a liquid into a gas. It is also known as evaporation. Since we know that the particles of a gas are moving faster than those of a liquid, an input of energy must be required for a liquid to become a gas.
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A substance decomposes with a rate constant of 9. 05 x 10-45-1. How
long does it take for 13. 0% of the substance to decompose?
The chemical must break down within 283 seconds.
The fact that the rate constant "k" is expressed in units of "s1" indicates that the reaction is a first-order one.
We also have the following for the first-order process from chemical kinetics:
equation is in attached image
Where,
K is the reaction's rate constant.
R0 = starting reactant concentration
R=remaining reactant concentration at time t.
t is the length of time needed for the change to take place.
Considering the query we have,
[tex]K=\frac{2.303}{t} log \frac{R_{0}}{R}\\K=9.05 {*} 10^{-4}S^{-1}[/tex]
R₀=100g
R=100-13=87g
By changing the necessary variables in equation (1), we obtain;
[tex]t=\frac{2.303} k *log \frac{100}{87}\\\\\\t=\frac{2.303}{9.05*10^{-4}} (log100-log87)\\\\t=\frac{2.303} {9.05*10^{-4}} *1.113\\\\t=\frac{2.563}{9.05}*10^{4} sec\\\\t=0.283*10^{4} sec\\\\t=283sec[/tex]
Therefore, 283 seconds are needed for the chemical to break down.
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cience
decribe the exual reproductive of flowering plant like the gumamela flower by
creating your own tory
By using the pollen from male flowers to fertilize female blooms, the gumamela reproduces.
One variety of hibiscus is the gumamela. Pollination allows the wild hibiscus species to procreate. When pollen from male flowers is spread to female flowers, the process is known as pollination. This is usually done by the wind or other animals. To draw pollinators that will aid in reproduction, large, vibrant flowers are frequently used.
Bees, butterflies, and birds are some of the more popular pollinators, though there are many other varieties as well. These critters are drawn to the nectar in flowers, which provides them with the energy to fly or buzz from one flower to the next. Pollen, which eventually results in fertilization and reproduction, is dispersed when they are moving around collecting nectar.
In rare circumstances, wind can also assist in pollination. In general, the reproduction process in wild hibiscus species is a complicated one that involves a wide variety of organisms and environmental conditions.
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answer the questions below about the highlighted atom in this lewis structure: in how many sigma bonds does the highlighted atom participate? in how many pi bonds does the highlighted atom participate? what is the orbital hybridization of the highlighted atom?
Nitrogen has one sigma bond, 2 pi bonds, and one lone pair. So, its steric number is also sp and its hybridization is sp.
To find the hybridization of any atom, we need to find its steric number. Steric number is the sum of sigma bonds formed by that molecule (or the number of atoms directly attached to the atom) and the number of lone pair of electrons present on that atom.Except for the carbon forming triple bond with nitrogen, all other carbons in diagram have 4 sigma bonds, and 0 pi bond, and arego through the given link below to know more about hybridization:-
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Agree or Disagree? Why?
While standing on the
beach during the
daytime, the breeze
always blows from the
land, because the land
is cooler than the sea
during the daytime.
Answer:
Explanation:
I'm sorry, but I disagree with the statement because the direction of the breeze is not solely determined by the difference in temperature between the land and sea. The direction of the breeze is influenced by a variety of factors such as the pressure system, the prevailing wind patterns and the shape of the land. During the daytime, sea breeze is a common phenomenon, which is caused by the land heating up faster than the ocean, and as the hot air rises, it creates a low-pressure system over the land, drawing in cooler air from the ocean. So, the breeze can blow from the land or sea during the daytime, it's not always blowing from the land.
at ph 7.4, most of the common amino acids have a net charge close to…
Since the isoelectric point (pI) of the majority of common amino acids is 7.4, the pH is neutral. The balance of acidic and basic groups on an amino acid determines its pI, which is the pH at which the amino acids
The building components of proteins are amino acids. They consist of an alpha carbon atom in the centre, to which bonds have been formed with amino, carboxyl, hydrogen, and a special side chain (R group). There are 20 different kinds of amino acids with distinct R groups that may be integrated into proteins. A broad variety of interactions between amino acids in a protein are made possible by these R groups, which also give amino acids their distinctive characteristics, such as being hydrophobic or hydrophilic. A protein's three-dimensional shape and function are determined by the amino acid sequence of the protein. In the body, proteins carry out tasks including catalysing metabolic processes, reproducing DNA, reacting to stimuli, and transporting chemicals.
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use the modified arrhenius theory to write an equation and determine if Ba(OH)2 is an acid or base
It is a base because in solution it produces two hydroxide anions.
What is Arrhenius theory?The Arrhenius theory, proposed in 1887 by the Swedish scientist Svante Arrhenius, states that acids dissociate in water to produce electrically charged atoms or molecules known as ions, one of which is a hydrogen ion (H+), and that bases ionize in water to produce hydroxide ions (OH). Acid, according to the Arrhenius theory, is a substance that releases H+ ions when dissolved in aqueous solution. The concentration of H+ ions in the solution rises. The base is a substance that, when dissolved in aqueous solution, ionizes the OH- ion.
Here,
The same logic holds true for the reaction of sulfuric acid and barium hydroxide. This reaction involves an Arrhenius acid, which generates two hydrogen cations in solution, and an Arrhenius base, which generates two hydroxide anions in solution.
It is a base as it generates two hydroxide anions in solution.
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carbon dioxide is sold in steel cylinders under a pressure of approximately 20 atm. is there liquid co2 in the cylinder at the following temperatures? if not, what phase(s) is present?
Under pressure, gaseous CO2 can liquefy as long as its temperature is below the critical point, which is 31 °C (87,8 °F). A colorless fluid with roughly the same density as water is created when a substance is squeezed and chilled below the critical point.
What is CO2?When two oxygen atoms are fused with one carbon atom, the result is carbon dioxide. It is commonly referred to by its chemical formula, CO2, rather than by its name because it is almost as well-known as the chemical formula for water, H2O.Carbon dioxide serves as the link in the natural food chain that keeps plant and animal life mutually dependent. This gas, which is necessary for plants to survive, is released every time humans breathe. The separation of carbon from oxygen by photosynthesis occurs in plants. Our bodies require pure oxygen to survive, which is released by plants. By reversing the process, we create carbon dioxide once more by fusing oxygen with the carbon from the food we eat.The atmosphere of the planet contains 0.03 percent of CO2, an inert, colorless gas that is 1 1/2 times heavier than air. It lacks smell, tastes like sweet soda water, and is quite stable (difficult to separate).By burning fuels with a high carbon content, a frequent process, it is created in different amounts. The most prevalent fuel for combustion is oil, which, when combined with the right amount of air, burns to produce 15% or less CO2 in the flue gases of a CO2 plant. After combustion, the CO2 can be extracted from the exhaust gases and made available for the various industrial uses to which it can be put. This can be done by a straightforward procedure.Three types of CO2 are possible:- as gaseous materials: for the food and beverage sectors
- liquid: in a pressure-containing storage tank
- as dry ice when it is solid (for cooling, blasting etc.).
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based on your theoretical yield, what is the percent yield of ammonia if only 8.33 grams of ammonia is produced?
The percent yield of ammonia would be 83.3%.
The percent yield of ammonia is calculated by dividing the actual yield (8.33 g) by the theoretical yield (10 g) and multiplying by 100. The result is 83.3%, which is the percent yield.The percent yield of ammonia is a measure of efficiency for a reaction, calculated by dividing the actual yield of the product by the theoretical yield of the product, and multiplying the result by 100. In this case, the actual yield of ammonia was 8.33 grams, while the theoretical yield was 10 grams. By dividing 8.33 by 10 and multiplying by 100, the percent yield of ammonia was determined to be 83.3%. This indicates that the reaction was 83.3% efficient, with the remaining 16.7% unaccounted for.
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(a) what factors determine whether a collision between two molecules will lead to a chemical reaction? (b) ac- cording to the collision model, why does temperature affect the value of the rate constant?
The collision's energy and the way the molecules are positioned at the time of contact. The molecules move faster and possess more KE at extremely high temperatures. Consequently, there are more collisions.
What happens when reaction happens?one or more new elements are formed as a result of the reorganization of the atoms or molecules of two substances when come into contact. Electrons of one material interact with some of those of another to produce chemical reactions.
What is an example of a chemical reaction?Reactants participate in a chemical reaction and turn into byproducts through a chemical change in a chemical reaction. Inhaling oxygen, by instance, results in the creation of atmospheric co2, water, and energy when combined with glucose.
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Here are some last minute questions I need help with!
The compound that has the molecular formula C₆H₁₀O₅ is the polymer molecule cellulose.
What is a Lewis structure?The electrons of the atoms bound together in a compound are represented using a Lewis structure. Between the two bound atoms, electrons are depicted as either dots or lines. The position of the various elements and the type of the relationship is revealed by the structure.
Lewis dot structures also show lone pairs and electron bond pairs.
The given compound whose formula is C₆H₁₀O₅ has a six-membered ring and is cellulose. It is a polymer of glucose. The monomer glucose unit is linked to each other by glycosidic bonds with the elimination of a water molecule.
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At 598 K the rate constant for the decomposition of NO₂ is 0. 750 M⁻¹s⁻¹. When the temperature is raised to 751 K the rate constant is 19. 7 M⁻¹s⁻¹. What is activation energy (Ea) for this reaction, expressed as kJ/mol? Enter just a number with 3 significant digits in "kJ/mol"
The activation energy (Ea) for this reaction is 34.7kJ when the rate constant for the decomposition of NO₂ is 0.750M⁻¹s⁻¹ at 598K and the rate constant at 751K is 19.7 M⁻¹s⁻¹.
Given the initial temperature (t1) = 598K
The first rate constant (k1) = 0. 750 M⁻¹s⁻¹
The final temperature (t2) = 751k
The second rate constant (k2) = 19.7 M⁻¹s⁻¹
Rate constants are related to temperature and activation energy by the Arrhenius equation as: ki = Ae^-(Ea/RTi) where A is the pre-exponential factor, R is the universal gas constant = 8.314472 J/mol.K, T is the temperature, Ea is the activation energy and K is rate constant. The activation energy for a given reaction is not affected by temperature.
So, k2/k1 = Ae^-(Ea/RT2)/Ae^-(Ea/RT1)
log(k2/k1) = -Ea/R[1/T2 - 1/T1]
log(19.7 / 0.750) = -Ea/8.314[1/751 - 1/598]
log(26.26) = -Ea/8.314[-0.00034]
1.419 x 8.314 = 0.00034Ea
Ea = 11.8/0.00034 = 34705.93 = 34.7kJ
Hence the required activation energy (Ea) is 34.7kJ
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write the balance molecular and net ionic equationf for the reaction between almunimum metal and silver nitrate. identify the oxidation and reduction half-reactions
The balanced chemical reaction is Al + 3AgNO3 → Al (NO3)3 + 3Ag.
A balanced chemical equation though has the identical number of atoms from every type inside the reaction on both the reactant chemical equation output sides. In a balanced chemical equation, both the mass and the change were equal.
An organic organization may adjust to changes in its surroundings very easily. It is distinguished by low complexity, low centralization, as well as low formalization. A mechanistic organization, on the other hand, is distinguished by great complexity, high centralization, as well as high formalization.
Thus, the balanced chemical reaction will be Al + 3AgNO3 → Al (NO3)3 + 3Ag.
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how is it that atoms with more electrons, more to the right, can be smaller than those with fewer electrons, on the left side?
The atomic size is determined by the interaction of these two factors, the amount of protons and the shielding effect.
What are electrons?The subatomic particles known as electrons orbit the atomic nucleus of an atom and are negatively charged. They are one of the basic building blocks of matter.
The atomic radius, also known as the separation between the nucleus and the outermost electrons, determines the size of an atom.
The number of protons in the nucleus, which defines the atomic number and, consequently, the number of electrons in the atom, as well as the electrons' energy level, are two parameters that have an impact on the atomic radius.
Because more electrons will occupy higher energy levels farther from the nucleus as the number of electrons grows, atoms with more electrons will typically have a bigger atomic radius than atoms with fewer electrons.
However, the amount of protons in the nucleus rises as you move across a period (left to right) in the periodic table, which intensifies the attraction of electrons to the nucleus. The atomic radius decreases as a result of the electrons moving in closer proximity to the nucleus.
Furthermore, as the number of electrons in an atom rises, the shielding effect of inner electrons rises as well. As a result, the outer electron will experience a reduced nuclear charge, which causes the electron to be further away from the nucleus and enlarges the atom.
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Copper has a density of
8.96 g/cm³. If it has a
volume 30.5 mL, what is
the copper's mass?
Mass may be calculated by multiplying density by volume if you already know the density and the volume.
How much substance is present in a material for each unit of volume is known as the density of an item. As a result, the following formula may be used to determine how an object's mass, m, density, ρ, and volume, V are connected.
ρ = m/V
where ρ=8.96 and V=30.5 and m=copper's mass
By entering these values into the equation above, we obtain
8.96 = m/30.5
Cross multiplying results in
m = 8.96x30.5
m = 273.28 g
Consequently, mass of copper is 273.28 g
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How many hydrogen bonds can C2H5OH make
2H5OH, also known as ethanol, is capable of forming hydrogen bonds. The ethanol molecule has a hydroxyl group (-OH) and a hydrogen atom on the carbon atom. The hydroxyl group can act as an electron donor and form hydrogen bonds with other electron-accepting groups such as nitrogen and oxygen atoms. The hydrogen atom can also act as an electron acceptor and form hydrogen bonds with electron-donating groups such as nitrogen and oxygen atoms.
In ethanol, the hydroxyl group is capable of forming one hydrogen bond with another molecule. In addition to that, the hydrogen atom on the carbon atom can form a hydrogen bond as well, So in total, C2H5OH can form 2 hydrogen bonds.
3. If Earth's glaciers were to melt, what would be the most likely effect Florida?
A. coastal flooding
B. till deposition
C. increased acid rain
D. an out wash plain
please answer!!
Answer:
An out wash plain
Explanation:
"Well if glaciers were to most likley melt wit would have a big affect on the world. But on Florida the affect would be as everybody would expect, a flash flood, with high water's and everything under water. AND there would most lilkley be something in the glacier. Not highly sure about it though"
Answer: A. coastal flooding. If Earth's glaciers were to melt, it would cause sea levels to rise, which would lead to coastal flooding in Florida and other low-lying coastal areas.
A reaction produces 88. 5 mol H2. What would the volume of this much Hą be at STP? 2 points Vour answer
A process yields 88. 5 mol H2. 88.5 moles of H2 at STP have a volume of 24,564.8 L (24.564 m3). A system's volume is a crucial and detailed parameter for defining its thermodynamic state.
The Ideal Gas Law, which says that PV = nRT, may be used to determine the volume of a gas at standard temperature and pressure (STP), where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature. The temperature and pressure are both equal to 1 atm at STP (273.15 K).
Therefore, we can apply the following calculation to get the volume of 88.5 moles of H2 at STP:
V = nRT / P
V is equal to (88.5 mol) x (8.314 J/mol K) x (273.15 K) /. (1 atm)
V = 24,564.8 L
Therefore, at STP, 88.5 moles of H2 have a volume of 24,564.8 L (24.564 m3).
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Pls help:)! Non polar molecules have what type of intermolecular forces?
Answer:
In Explanation
Explanation:
Nonpolar molecules have London Dispersion forces as their only intermolecular force. London Dispersion forces are weak attractive forces that exist between all types of atoms and molecules, including nonpolar ones. These forces are caused by the temporary redistribution of electrons within the molecule, which creates temporary dipoles (uneven distribution of electrons) that can attract other nearby molecules. London Dispersion forces are relatively weak compared to other types of intermolecular forces, such as hydrogen bonding and dipole-dipole interactions, but they can still have a significant effect on the properties of nonpolar molecules, such as their boiling and melting points.
(Please give brainlist)
Answer: Dipole-Induced Dipole Forces
Fuerzas de dipolo inducidas por dipolo
Explanation:
These occur between a polar molecule and a nonpolar molecule, and thus must describe solutions. The polar molecule with a permanent dipole induces a dipole moment in the non-polar molecule. The more polarizable the nonpolar molecule, the easier it is to induce a dipole, and so the greater the interaction.
Espanol:
Estos ocurren entre una molécula polar y una molécula no polar y, por lo tanto, deben describir soluciones. La molécula polar con un dipolo permanente induce un momento dipolar en la molécula no polar. Cuanto más polarizable es la molécula no polar, más fácil es inducir un dipolo y, por lo tanto, mayor es la interacción.
Do my science project for me pls
I would do it myself but I don't have the materials to do it :(
Answer: Okay, what do you have todo? And what do you need todo it?
Explanation: I'll do it for you.
3. When neither air masses can overpower each other and may not move
for a long time.
1) warm front
2)cold front
3)occluded front
4)stationary front
When neither air mass can overpower the other and therefore cannot move the option 4- stationary front
A stationary front is a weather boundary where two air masses meet and neither one can overpower the other, resulting in little or no movement of the front. This can lead to prolonged periods of cloudy, damp, and often unstable weather. Warm fronts, cold fronts, and occluded fronts are all types of frontal systems that can move across a region, while stationary fronts tend to remain in a specific location for an extended period of time.
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two liquids are poured in a container and mixed. a solid forms and settled to the bottom of the container. what can you conclude?
When two liquids are poured in a container and mixed, the solid that is formed and settles to the bottom of the container is called a precipitate.
Precipitates formed in a chemical reaction are the solid products of the reaction. They are insoluble in nature and exists as ionic solids. They are so formed by the combination of cations and anions when two different liquids are poured together.
Not all aqueous solution mixtures form precipitates. The extent of precipitation depends on certain factors such as temperature, concentration of solution and buffer solutions used.
The precipitates settle at the bottom of the aqueous solution.
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at what gas temperature te would the average translational kinetic energy of a hydrogen molecule be equal to that of an oxygen molecule in a gas of temperature 300 k?
At a gas temperature of 300 K, the average kinetic energy of a hydrogen molecule is equal to that of an oxygen molecule.
A molecule or gas particle's average kinetic energy is proportional to its absolute temperature, and this relationship is represented by the equation [tex]KE_{avg}=\frac{3 k__BT}{2}[/tex]. Here, [tex]k_B[/tex] is used to represent the Boltzmann constant, and T is used to represent the temperature.
In the given situation, the average kinetic energy depends mostly on the gas molecule's temperature and not its type. At the same temperature, [tex]\mathrm{KE_{avg}\;of\;oxygen=KE_{avg}\;of\;Hydrogen}[/tex]. Then, the temperature of hydrogen is also equal to that of the temperature of oxygen. Therefore, [tex]\mathrm{T_{O_2}=T_{H_2}}=\mathrm{300\;K}[/tex].
The required answer is 300 K.
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Ionic bonding
Chemistry
The images of the ionic bonds of the compounds is shown in the image attached.
What is ionic bonding?If we are talking about the ionic bonding model, what we mean is that in this kind of bonding. there is the transfer of electrons from the metals to the non metals. In this process, the metal would be positively charged while the non metal would be negatively charged.
As such, in the case of the potassium bromide, we can see from the image that electrons are transferred from potassium to bromine while electrons are transferred from aluminum to chlorine.
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a 25.000 g saple of sulfur is burned. some of the sulfur reacts to form so2. the rest of the sulfur reacts to form so3. the total mass of the products (so2 and so3) is 58.723g. calculate the masses of so2 and so3 in this mixture
The mass of sulfur dioxide (SO₂) is 64.06 grams, and the mass of sulfur trioxide (SO₃) is 160.12 grams.
To calculate the masses of SO2 and SO3 in this mixture, we need to use the balanced chemical equations for the reactions and the information about the total mass of products. First, we can calculate the number of moles of sulfur that was burned by dividing the mass of the sample by its molar mass:
25,000 g / 32.06 g/mol = 777.7 mol
Next, we can use the balanced equations to determine the stoichiometry of the reactions. From the first equation, we know that 1 mole of sulfur (S) reacts to form 1 mole of sulfur dioxide (SO₂):
1 mol S + 1 mol O₂ → 1 mol SO₂
From the second equation, we know that 2 moles of sulfur (S) reacts to form 2 moles of sulfur trioxide (SO₃):
2 mol S + 3 mol O₂ → 2 mol SO₃
By using the information from the balanced equations and the number of moles of sulfur, we can find the number of moles of SO2 and SO3 that are formed:
SO₂: 1 mol S × (1 mol SO₂ / 1 mol S) = 1 mol SO₂
SO₃: 2 mol S × (2 mol SO₃ / 2 mol S) = 2 mol SO₃
Finally, we can use the number of moles of SO₂ and SO₃ to find the masses of SO₂ and SO₃ in the mixture:
SO₂: 1 mol × (64.06 g/mol) = 64.06 g
SO₃: 2 mol × (80.06 g/mol) = 160.12 g
Therefore, the mass of sulfur dioxide (SO₂) is 64.06 grams, and the mass of sulfur trioxide (SO₃) is 160.12 grams in this mixture.
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Your question seems incomplete, but I suppose the full question was:
"A 25,000 g sample of sulfur is burned. Some of the sulfur reacts to form SO₂: S + O₂ → SO₂ The rest of the sulfur reacts to form SO₃: 2 S + 3 O₂ → 2 SO₃ The total mass of products (SO₂ and SO₃) is 58.723 g. Calculate the masses of SO₂ and SO₃ in this mixture."
What types of mixtures could be separated by decanting? Is laboratory equipment necessary
for decanting a mixture? Why or why not?
Answer:
Decanting can separate solid-liquid mixtures or mixtures of two immiscible liquids.
Laboratory equipment is not needed to decant a mixture because one liquid is denser than the other liquid so they separate naturally
Explanation:
Decanting can separate solid-liquid mixtures or mixtures of two immiscible liquids.
This is because decanting involves carefully pouring of a liquid from one container to another and as such, it can be used to separate immiscible liquids such as oil and water.
you are working with a specific enzyme-catalyzed reaction in the lab. you are a very careful experimentalist, and as a result, at the beginning of each of your experiments, you measure the temperature in the lab. on days 1 through 5, the temperature in the lab was 20oc. today is day 6 of your experiment, and the temperature in the lab is 30oc. how do you predict that this will alter the rate of your enzyme-catalyzed reaction?
The rate of enzyme-catalyzed reactions typically increases as increase in temperature. Therefore, it is possible that the rate of your enzyme-catalyzed reaction will be faster at 30°C than it was at 20°C.
What are different types of catalysts?Catalysts can be classified as homogeneous, heterogeneous, or enzymatic. Homogeneous catalysts live in the same phase as the reactants, while heterogeneous catalysts exist in a different phase than the reactants.
What is enzyme catalysis?Enzyme catalysis is the upsurge in the rate of a process by a biological molecule, an enzyme. Most enzymes are proteins, and most such processes are chemical reactions. Within the enzyme, generally catalysis occurs at a localized site, called the active site.
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why do scientists measure levels of dissolved oxygen in water?
All aquatic life uses dissolved oxygen in surface water, hence this element is frequently analyzed to determine the "health" of lakes and streams. Both groundwater discharge and atmospheric oxygen enter streams.
The amount of oxygen that is dissolved in the water, or the amount of oxygen that is available to living aquatic organisms, is measured by the term "dissolved oxygen" (DO). We can learn a lot about the water quality of a stream or lake by measuring the amount of dissolved oxygen present.For many years, the USGS has been measuring water. No matter where in the United States the water is being researched, some measures are virtually always made, including temperature, pH, and specific conductance. Dissolved oxygen (DO), a measurement of how much oxygen is dissolved in the water, is another often used indicator that can reveal a lot about the measuement of (water quality).
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The production of smog from the chemical NO requires _____
chlorine
nitrogen
water
oxygen
cfcs
in this reaction, if a total of 10.0 g of zinc and hydrochloric acid react completely, what is the total mass of the products produced? zn(s) 2hcl(aq) zncl2(aq) h2(g) select one: a. exactly 10.0 g b. greater than 10.0 g c. less than 10.0 g d. not enough information to tell
The total mass of the products is 21.004 g. The correct option is C.
Observe the balanced equation and use the mol ratios to determine the mols of product (zinc chloride) and hydrogen (hydrogen) produced. Then use the molar mass of zinc chloride and hydrogen to convert mols to grams.
The balanced chemical reaction is given as,
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
10.0 g Zn x 1 mol Zn / 65.4 g = 0.152 mols of Zn
0.152 mols Zn x 1 mol ZnCl₂ / 1 mol Zn = 0.152 mols ZnCl₂ produced
Convert the mass of zinc chloride into mass.
0.152 mols ZnCl₂ x 136 g / mol = 20.7 g ZnCl₂ produced
0.152 mols Zn x 1 mol H2 / mol Zn = 0.152 mols H₂
Convert the mass of hydrogen into mass.
0.152 mols H₂ x 2 g / mol = 0.304 g H₂ produced
Total mass of the products is 20.7 + 0.304 = 21.004 g
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Answer:
B. greater than 10.0 g
a chemist wants to make 5.0 moles of (nh4)3po4 in a formation reaction starting with the constituent elements. how many moles of hydrogen gas are needed
A chemist wants to make the 5.0 moles of (NH₄)₃PO₄ in the formation of the reaction starting with the constituent elements. The moles of hydrogen gas are needed is 60 moles.
The chemical name of the compound is (NH₄)₃PO₄ is ammonium phosphate.
1 mole of (NH₄)₃PO₄ requires the 12 moles of the hydrogen
1 mole = 6.022 × 10²³ atoms / molecules , this is Avogadro's constant
1 mole of (NH₄)₃PO₄ = 12 moles of the hydrogen
5 moles of (NH₄)₃PO₄ = 5 × 12 moles of the hydrogen
5 moles of (NH₄)₃PO₄ = 60 moles of the hydrogen .
Thus, the moles of hydrogen is 60 moles.
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