Bihar Police Constable Model Paper 2

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Question : 90 of 100

Marks: +1, -0

What is the mass of 1 mole of water?

16 grams
18 grams
20 grams
14 grams

Solution:

Explanation:

1 mole of H2O = Molecular mass of H2O in grams
- Mass of 2H + Mass of 1O
- 2 × 1 + 16 × 1
- 2 + 16
- 18 grams

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