Try 3 free problems on mole ratios, limiting reactants, theoretical yield, and percent yield. Want more reps? Premium opens the full 174-problem bank in sets of 3, 9, or 18.
Work these 3 to find out whether your stoichiometry road map is clear enough to follow without losing track — or whether the logic needs another pass before it holds up on a test.
#4Limiting Reactant
2 Mg + O2 → 2 MgO. You have 12.0 g of Mg and 16.0 g of O2. How many grams of MgO form? (MM: Mg = 24.31, O2 = 32.00, MgO = 40.30 g/mol)
#5Stoichiometry Road Map
In a stoichiometry problem, you are given grams of a reactant and asked for grams of a product. What is the correct order of conversions?
#6Percent Yield
N2 + 3H2 → 2NH3. Starting with 10.0 g N2 and 8.00 g H2, the actual yield of NH3 is 9.50 g. What is the percent yield? (MM: N2 = 28.01, H2 = 2.016, NH3 = 17.03 g/mol)
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174 problems across mole ratios, limiting reactant, theoretical yield, and percent yield
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High School Chemistry · Unit 09 · Stoichiometry Practice