Honors Chemistry Worksheet 3: Stoichiometry Practice Problems

Honors Chemistry Worksheet 3 featuring stoichiometry practice problems with balanced chemical equations and missing information to be determined, including mole, gram, and particle conversions.

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- 5 mol Al₂O₃ → 10 mol Al + 7.5 mol O₂
- 1.25 mol Al₂O₃ → 2.5 mol Al + 3.75 mol O₂
- 25 g Al₂O₃ → 13.24 g Al + 11.76 g O₂
- 4.00 mol Al₂O₃ → 8.00 mol Al + 6.00 mol O₂

- 0.75 mol CuO + 0.75 mol H₂SO₄ → 0.75 mol CuSO₄ + 0.75 mol H₂O
- 50 g CuO → 0.630 mol CuO + 0.630 mol H₂SO₄ → 0.630 mol CuSO₄ + 0.630 mol H₂O
- 3.5 mol CuSO₄ ← 3.5 mol CuO + 3.5 mol H₂SO₄ → 3.5 mol H₂O
- 2.00 mol H₂O ← 2.00 mol CuO + 2.00 mol H₂SO₄ → 2.00 mol CuSO₄

- 1.51×10²³ atoms K → 0.250 mol K + 0.0833 mol N₂ → 0.0833 mol K₃N
- 1.25 mol N₂ → 3.75 mol K + 1.25 mol N₂ → 2.50 mol K₃N
- 25 g K₃N → 0.269 mol K₃N ← 0.807 mol K + 0.269 mol N₂

Parent Tip: Review the logic above to help your child master the concept of chemistry stoichiometry worksheet.

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