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GK QUESTION#3148

Using the rounded atomic masses H = 1 and O = 16, what is the mass ratio of hydrogen to oxygen in water (H₂O)?

  1. A1: 6
  2. B1: 8Correct answer
  3. C1: 4
  4. D8: 1
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Answer

B. 1: 8

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Explanation

Using the rounded atomic masses H = 1 and O = 16, H₂O contains hydrogen and oxygen in the mass ratio 2×1:16 = 1:8. This is a mass ratio, not the 2:1 atom-count ratio.

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