What is the molar mass of water (H2O)?
-
18 g/mol
- 22 g/mol
- 16 g/mol
- 12 g/mol
The correct answer is: A
Explanation
The molar mass of water (H2O) is calculated by adding the atomic masses of its constituent elements: 2 hydrogen atoms (each with a molar mass of approximately 1 g/mol) and 1 oxygen atom (with a molar mass of approximately 16 g/mol). Therefore, the molar mass of water is 2 x 1 g/mol + 1 x 16 g/mol = 18 g/mol.
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