Mg₃N_2(s) + 3H₂O_(l) → 3 MgO + 2NH_3(g) If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?

How many grams of helium are in a gas sample that has a volume of 500.0 mL at a pressure of 3.00 atm and a temperature of 298 K?

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?

2 Cu₂S + 3 O₂ → 2 Cu₂O + 2 SO₂

This reaction uses 18.2 g of Cu₂S. What volume of SO₂ gas would be collected at 237°C and 10.7 atm?

Which of the following refer(s) to as the standard temperature?

 2 Li(s) + 2 H₂O(l) → 2 LiOH(aq) + H₂(g)

What is the volume of H₂ when 0.561 grams of H₂ gas occupy at 265 K and a pressure of 0.900 atm?

2 Na + Cl₂ → 2 NaCl

What pressure, in atm, is exerted by 2.50 L of Cl₂ gas containing 1.35 mol at 320 K?

2 AlCl₃ → 2 Al + 3 Cl₂

How many moles of AlCl₃ must decompose in order to produce 3.10 L of Cl₂ at 50.0 ^oC and 98.4 kPa?

2 NH₃ + 3 Cl₂ → N₂ + 6 HCl

How many grams of Cl₂ must react to produce 16.0 L of N₂ gas at 1.2 atm and 23 ^oC?

2 CO + O₂ → 2 CO₂

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?

2CO + O₂ −-> 2CO₂

How many liters of carbon dioxide at STP are produced from 10.0 L of carbon monoxide at STP?

4 NH₃ + 6 NO → 5 N₂ + 6 H₂O

How many liters of NH₃ at 32.6 ^oC and 4.25 kPa are needed to react completely with 30.0L of NO at STP?

When solving gas stoichiometry problems, for STP conditions use __________, and for non-STP conditions use __________.