Worksheet:
1) How many moles of carbon dioxide, CO2, can be formed by the decomposition of 5 moles of aluminum carbonate, Al2(CO3)3?
Al2(CO3)3 → Al2O3 + 3 CO2
2) How many moles of oxygen are required to burn 22.4 liters of ethane gas, C2H6 at standard conditions?
2 C2H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H2O (g)
3) A chemist performs the synthesis of sodium chloride from its elements. The chemist begins with 46 grams of sodium. How many moles of chlorine are needed?
2 Na + Cl2 → 2 NaCl
4) Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed?
C3H8 + 5 O2 → 3 CO2 + 4 H2O
Answers:
1) 15 moles of CO₂
2) 2606.38 moles of O₂
3) 1 mole of Cl₂
4) 8 moles of H₂O
1) How many moles of carbon dioxide, CO2, can be formed by the decomposition of 5 moles of aluminum carbonate, Al2(CO3)3?
Al2(CO3)3 → Al2O3 + 3 CO2
2) How many moles of oxygen are required to burn 22.4 liters of ethane gas, C2H6 at standard conditions?
2 C2H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H2O (g)
3) A chemist performs the synthesis of sodium chloride from its elements. The chemist begins with 46 grams of sodium. How many moles of chlorine are needed?
2 Na + Cl2 → 2 NaCl
4) Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed?
C3H8 + 5 O2 → 3 CO2 + 4 H2O
Answers:
1) 15 moles of CO₂
2) 2606.38 moles of O₂
3) 1 mole of Cl₂
4) 8 moles of H₂O
More stoichiometry problems: