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- 1. Multiple Choice
2Al + 6HCl → 2AlCl3 + 3H2
How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?
13 g Al
8.8 g Al
22 g Al
1.0 g Al
- 2. Multiple Choice
Mg3N2 + 3H2O → 3MgO + 2NH3
If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20.0°C and 0.989 atm?
14.5 L NH3
4.96 L NH3
0.261 L NH3
24.9 L NH3
- 3. Multiple Choice
Mg + 2H2O → Mg(OH)2 + H2
What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium?
62.0 L H2
40.1 L H2
2.77 L H2
1.15 L H2
- 4. Multiple Choice
Mg3N2 + 3H2O → 3MgO + 2NH3
How many grams of water are required to produce 10.3 L of ammonia gas at STP?
0.423 g H2O
12.4 g H2O
30.4 g H2O
10.3 g H2O
- 5. Multiple Choice
When solving gas stoichiometry problems, for STP conditions use __________, and for non-STP conditions use __________.
PV = nRT, 1 mol = 22.4 L
1 mol = 22.4 L, PV = nRT
- 6. Multiple Choice
4NH3 + 6NO → 5N2 + 6H2O
How many liters of NH3 at 32.0°C and 1.25 atm are needed to react completely with 2.50 moles of NO?
5.27 L NH3
33.4 L NH3
45.2 L NH3
536 L NH3
- 7. Multiple Choice
2CO + O2 → 2CO2
How many liters of carbon dioxide are produced from 3.50 moles of carbon monoxide at STP?
78.4 L CO2
20.0 L CO2
15.4 L CO2
32.5 L CO2
- 8. Multiple Choice
2Cu2S + 3O2 → 2Cu2O + 2SO2
What volume of sulfur dioxide gas would be collected at 238°C and 10.7 atm if 2.00 moles of O2 are reacted?
5.21 L SO2
32.5 L SO2
0.207 L SO2
16.8 L SO2
- 9. Multiple Choice
2NaN3 → 2Na + 3N2
What volume of N2 will be produced when 35.0 g of NaN3 are reacted at 2.35 atm and 45.0°C?
15.1 atm
22.1 atm
0.125 atm
8.96 atm
- 10. Multiple Choice
2CO + O2 → 2CO2
How many moles of carbon monoxide are needed to react with 12.30 L of oxygen gas at STP?
3.149 mol CO
31.80 mol CO
1.098 mol CO
20.10 mol CO
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