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Q.

The atomic mass of the deuterium isotope of hydrogen is 2. The atomic mass of oxygen is 16. Then what is the molecular mass of heavy water?

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a

16

b

18

c

20

d

24 

answer is C.

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Detailed Solution

The molecular mass of heavy water
= (2 × Atomic mass of Deuterium + Atomic mass of Oxygen)
= (2 × 2) +16
= 20
 
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