Chemistry, asked by RuDrA1AhAlAwat, 28 days ago

GUYS PLEASE ANSWER

The average atomic mass of a sample of element X is 80 u. It has
Two Naturally Occurring Isotopes X-79 and X-81. What is
the percentage of both the isotopes of element X?

Answers

Answered by Shivayan

2

Answer:

Let the percentage of 816X be A %. Then the percentage of 818X be (100−A) %.

∴ 16×100A+18×100100−A=16.2

⟹1800−2A=1620

⟹A=90

So the answer is 90% 816X and 10% 818X

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