What amount of substance (mol) corresponds to 54 g of water H2O?

univerkov | December 11, 2020 | education

Given:
m (H2O) = 54 g.
Find: n (H2O) -?
Decision:
n = m / M
M (H2O) = 2 * M (H) + M (O) = 2 * 1 + 16 = 2 + 16 = 18 g / mol.
n = 54 g / 18 g / mol = 3 mol
Answer: n (H2O) = 3 mol.

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