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Question

Calculate the gram molecular mass of water from the values of gram atomic mass of Hydrogen and of Oxygen.
Gram atomic mass of Hydrogen =1 g
Gram atomic mass of Oxygen =16 g

A
17
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B
18
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C
33
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D
34
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Solution

The correct option is A 18
Gram atomic mass of Hydrogen =1 g
Gram atomic mass of Oxygen =16 g
The gram molecular mass of water (H2O) = 2(1)+16=18 g

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