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Stoichiometry II: mass-to-mass conversions — Homework
Show all three steps (grams to moles, moles to moles, moles to grams) for every problem.
- 1.Using 2Na + Cl2 -> 2NaCl, how many grams of NaCl form from 4.60 g of Na? (Molar mass Na = 22.99, NaCl = 58.44 g/mol.)
- 2.Using CaCO3 -> CaO + CO2, how many grams of CO2 form from 25.0 g of CaCO3? (Molar mass CaCO3 = 100.09, CO2 = 44.01 g/mol.)
- 3.Using 2H2 + O2 -> 2H2O, how many grams of O2 are needed to react completely with 10.0 g of H2? (Molar mass H2 = 2.02, O2 = 32.00 g/mol.)
- 4.Using 2Mg + O2 -> 2MgO, how many grams of MgO form from 6.00 g of Mg? (Molar mass Mg = 24.31, MgO = 40.31 g/mol.)
- 5.Using C + O2 -> CO2, how many grams of CO2 form from 3.00 g of carbon? (Molar mass C = 12.01, CO2 = 44.01 g/mol.)
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