Chemistry, asked by barigautami06, 9 months ago

please help me......​

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Answered by harichandanasathi
1

Answer:70

Explanation:I'm not sure of answer.. but trying to help u.

Here you need to consider atomic mass of bromine(80).

80 by 120 into 100.. 110 cuz .. overall mass.. 80 plus 30.. it's coming near 73 %

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