What is the molar mass of water (H = 1, O = 16)?
Answer and explanation
Correct answer: C. 18 g/mol
- Step 1: Two hydrogen atoms give 2. Step 2. One oxygen atom gives 16, so the total is 18. Answer: 18 g/mol. Why not the others: 16 omits the hydrogens, 17 is hydroxide and 34 is hydrogen peroxide.
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