What mass of water is produced when 8.0g of hydrogen reacts with excess oxygen? [H = 1, O = 16]

A. 36.0g
B. 8.0g
C. 72.0g
D. 16.0g

Correct Answer:

Option C – 72.0g

Explanation

2H2 + O2 → 2H2O
4 → 36
8 → X
X → (8/6) * 36
= 72.0g