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The half life period of uranium is 4.5 b...

The half life period of uranium is 4.5 billion years. After 9.0 billion years, the number of moles of heliumm liberated from the following nuclear reaction will be:
`._(92)^(238)U to ._(90)^(234)Th + ._(2)^(4)He`
Initially there was I mole uranium.

A

0.75 moles

B

1.0 mole

C

11.2 mole

D

22.4 mole

Text Solution

Verified by Experts

The correct Answer is:
A
`N = N_0/(2^n) = N = N_0/(2^2) = 1/4`
`therefore` converted moles = `1- 1/4 = 3/4 = 0.75`
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