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Gaseous States

Quick practice

Question 1 of 5

O has 3 isotopes, \mathrm{O^{16}, O}^{17} and  \mathrm{O}^{18}. The average atomic mass of O is 16.12 g. Mole % of \mathrm{O}^{16}  is 90%. Then the mole % of \mathrm{O}^{18} is ______.

A

4%

B

1%

C

2%

D

3%

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