GS Stoichiometry

2Al + 6HCl --> 2AlCl₃ + 3H₂

Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?

• 13

• 8.8

• 0.99

• 1.0

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

1Mg + 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

• 0.12 L

• 2.77 L

• 1.15 L

Tags

NGSS.HS-PS1-7

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

Tags

NGSS.HS-PS1-7

When solving for gas stoichiometry problems which of the following is correctly matched?

• STP conditions; molar mass

• NON STP conditions; PV=nRT

• STP conditions; PV=nRT

• NON STP conditions; 22.4 moles

2CO + O₂ −-> 2CO₂

How many liters of carbon monoxide at 25.0^oC and 8.56 mmHg are needed to react with 12.30 L of oxygen gas at STP?

• 3.14 L

• 318 L

• 2390 L

• 200 L