Question

find find the molecular mass of H2O find the molecular mass of H2O find the mass of H2O​

Answer 1

Answer:

The average mass of one H2O molecule is 18.02 amu.

Explanation:

The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.

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