Stoichiometry worksheets
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A mixture contains hydrogen gas with a partial pressure of 0.400 atm, oxygen gas with a partial pressure of 0.200 atm, and nitrogen gas with a partial pressure of 0.600 atm. What is the total pressure of the mixture of gases?
0.048 atm
1.200 atm
0.600 atm
0.400 atm
A mixture contains hydrogen gas with a partial pressure of 0.400 atm, oxygen gas with a partial pressure of 0.200 atm, and nitrogen gas with a partial pressure of 0.600 atm. What percentage of the gas is oxygen?
33.3%
20.0%
16.6%
25.0%
Hydrochloric acid and magnesium react to produce magnesium chloride and hydrogen gas. As in the molar volume lab, the gas is collected in a tube by water displacement. The space above the water contains
hydrogen gas only.
hydrogen gas, water vapor, and magnesium chloride.
hydrogen gas and water vapor.
hydrogen gas and magnesium chloride.
The vapor pressure of water increases as
surface area of the water source increases.
the surface area of the water decreases.
temperature increases.
temperature decreases.
The molar volume of a gas at standard temperature and pressure (STP) is
dependent on the type of gas.
proportional to the molar mass of the gas.
equal to the molar mass in grams.
22.4 liters.
Hydrogen and oxygen react under a specific set of conditions to produce water according to the follwoing: 2H2(g) + O2(g) --> 2H2O(g). How many moles of hydrogen would be required to produce 5.0 mol of water?
5.0 mol H2
4.0 mol H2
7.0 mol H
5.0 mol of H
Given the combustion reaction C3H8 + 5O2 → 3CO2 + 4H2O, how many liters of carbon dioxide can be produced from 1.00 liter of O2 at standard temperature and pressure?
0.600 L
0.825 L
1.21 L
1.67 L
Mg3N2 + 3H2O ––> 3 MgO + 2NH3
If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?
4.9 L NH3
4.96 L NH3
0.261 L NH3
0.26 L NH3
2CO + O2 −-> 2CO2
How many liters of carbon dioxide at STP are produced from 10.0 L of carbon monoxide at STP?
10.0 L
20.0 L
5010 L
0.0199
A sample of oxygen gas occupies 5.0 L at STP. What is the mass of the oxygen gas in this sample?
7.1 g
5.0 g
32 g
There is not enough information to determine the mass of the oxygen gas.
What mass of sodium chloride would be produced from the reaction of 11.2 liters of chlorine gas at STP with excess sodium?
29.2 g
58.4 g
9.23 g
18.4 g
What would be the volume of 2.00 g of helium at 2.40 atm and 28oC?
5.15 L
22.4 L
10.2 L
2.57 L
A sample of 0.25 mol of oxygen gas is contained in a flask with a volume of 5.00 L. What can you conclude about an equal volume of nitrogen gas at the same temperature and pressure as the oxygen gas?
It will have the same mass.
It will have the same density.
It will contain the same number of particles.
It will have higher kinetic energy.
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