Question

What is the percentage of dueterium in heavy water? a)20% b)80% c)60% d)40%​

Answer 1

Answer:

Correct option is a

20%Heavy water (D 2O) is also called deuterium oxide.

Deuterium, the hydrogen isotope has a mass double of that of ordinary hydrogen.

The molecular weight of D 2O=2(2)+16=20 g/mol

The percentage weight of deuterium in heavy water is=

20

4

×100=20%