Question

The natural uranium consists of three isotopes in the ratio 99.274 : 0.720 : 0.006. Find the average atomic mass of uranium​

Answer 1

Answer:

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Explanation:

Answer

Correct option is

A

86

Activity(A)=

half life ln2

×Number of particles(N) −(1)

Given that for 92

U 234, 92

U 235 and 92

U 238 :

The number of particles are in ratio, 0.0006:0.71:99.28 and half-life are in ratio, 2.5:7100:45000

From the equation (1), the activities are in ratio: 2.4:1:22

So, percentage share in total activity of natural uranium are 9.45%, 3.94% and 86.61% for the

92

U 234 , 92

U 235 and 92

U 237.97 respectively.

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Answer 2

Answer:

The natural uranium consists of three isotopes in the ratio 99.274 : 0.720 : 0.006. Find the average atomic mass of uranium

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