7
AssignmentMultiple Choice

Stoichiometric Calculations

Question 7 • LA-Chemistry A

Water (H2O) forms when hydrogen gas (H2) and oxygen gas (O2) react according to the equation below:2H2 +O2 → 2H2OWhat mass of water forms when 1.45 × 10-3 g O2 react completely? (Molar mass of O2 = 32.00 g/mol; molar mass of H2O = 18.02 g/mol)

Answer
A
1.63 × 10-3 g
B
8.16 × 10-4 g
C
1.29 × 10-3 g
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