What is the molar mass of water (H 2 O)?
CHEMISTRY
JAMB 2023
What is the molar mass of water (H2O)?
- A. 18 g/mol
- B. 22 g/mol
- C. 16 g/mol
- D. 12 g/mol
Correct Answer: A. 18 g/mol
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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