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Molecular Mass

Molecular mas...

Question

Molecular mass of water is __________ u.

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Solution

Molecular formula of water is $H_{2} O$ . Atomic mass of $H = 1 u$ and atomic mass of $O = 16 u$ . Thus, molecular mass of $H_{2} O = 2 \times 1 + 16 = 18 u$ .

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