How much hydrogen reacts with 8 g of oxygen?

univerkov | November 24, 2020 | education

Given:
m (O2) = 8 g
To find:
V (H2) -?
Decision:
O2 + 2H2 = 2H2O
n (O2) = 8 grams / 32 grams / mol = 0.25 mol
0.25 mol / 1 mol = n mol / 2 mol
n (H2) = 0.25 * 2 mol / 1 mol = 0.5 mol
V (H2) = 22.4 liters / mol * 0.5 mol = 11.2 liters
Answer: 11.2 liters

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