Find the molecular mass of H2O.
kalaenclavekhod:
The average mass of one H2O molecule is 18.02 amu. 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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4
Answer:
18
Explanation:
H2O
H weight = 1
O weight = 16
1 × 2 + 16
→ 18
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