Gas Law and Stoichiometry Quiz

What is the conversion factor used for gases at STP?

• 22.4 L per mole

• 24.5 L per mole

• 20.1 L per mole

• 18.2 L per mole

What are the standard temperature and pressure (STP) values?

• 298 Kelvin and 2 atmospheres

• 273 Kelvin and 1 atmosphere

• 298 Kelvin and 1 atmosphere

• 273 Kelvin and 2 atmospheres

How many molecules of oxygen are required to combust one molecule of propane?

• 6 molecules

• 5 molecules

• 4 molecules

• 3 molecules

What is the volume of oxygen consumed when 10 grams of propane combusts at STP?

• 20.0 L

• 25.4 L

• 22.4 L

• 18.6 L

What is the balanced chemical equation for the corrosion of aluminum in hydrochloric acid?

• 2 Al + 6 HCl → 2 AlCl3 + 3 H2

• Al + HCl → AlCl + H2

• 2 Al + 3 HCl → Al2Cl3 + 3 H2

• Al + 2 HCl → AlCl2 + H2

What is the calculated volume of hydrogen gas produced from 28 grams of aluminum at 25°C and 800 T?

• 35 L

• 45 L

• 40 L

• 30 L

What is the ideal gas law equation used to calculate volume?

• n = PV/RT

• P = nRT/V

• V = nRT/P

• PV = nRT

How many grams of zinc are needed to produce 600 mL of hydrogen gas at 20°C and 770 T?

• 2 grams

• 4 grams

• 1 gram

• 3 grams

What is the mole ratio of zinc to hydrogen in the reaction with sulfuric acid?

• 1:1

• 2:1

• 1:2

• 3:1

What is the gas law constant R value used in the calculations?

• 0.0821 atm L/mol K

• 0.0901 atm L/mol K

• 0.0701 atm L/mol K

• 0.0601 atm L/mol K