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Answer 1

SOLUTION

The Isotopes of chlorine are in the ratio 3:1. It means that the two Isotopes are 75% & 25% respectively.

Average atomic mass of Chlorine

$= > \frac{35 \times 75}{100} + \frac{37 \times 25}{100} \\ \\ = > \frac{105}{4} + \frac{37}{4} \\ \\ = > \frac{142}{4} \\ \\ = > 35.5u$

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Answer 2

Answer:

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