What is the molar mass (in g/mol) of ? (H = 1, C = 12, N = 14, O = 16, Na = 23, S = 32, Ca = 40)

Answer and explanation

Correct answer: D. 18

  1. Step 1: Identify the constituent atoms in water (): hydrogen atoms and oxygen atom.
  2. Step 2: Multiply by their atomic masses (, ): .
  3. Step 3: Sum the values: .
Answer
18.

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