3. Stoichiometry

Stoichiometric Calculations — Quiz

Test your understanding of stoichiometric calculations with 5 practice questions.

Practice Questions

Question 1

How many moles of H₂O are produced when 2 moles of O₂ react completely with excess hydrogen according to the reaction: 2H₂ + O₂ → 2H₂O?

Question 2

What is the molar mass of calcium carbonate (CaCO₃)?

Question 3

If 5.00 g of H₂ react with excess O₂, how many grams of H₂O are produced? (2H₂ + O₂ → 2H₂O, Molar mass H₂ = 2.02 g/mol, Molar mass H₂O = 18.02 g/mol)

Question 4

What is the mole ratio of aluminum to aluminum oxide in the reaction: 4Al + 3O₂ → 2Al₂O₃?

Question 5

If 10.0 g of NaOH (molar mass = 40.00 g/mol) is reacted with HCl, how many moles of NaCl are produced? (Reaction: NaOH + HCl → NaCl + H₂O)