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Question

Total mass of neutrons in 7 mg of 14C is :

A
3×1020 kg
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B
4×106 kg
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C
5×107 kg
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D
4×107 kg
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Solution

The correct option is B 4×106 kg

Mass of one neutron = 1.674931027kg.

Mass of total neutrons in 7g of 14C =(2.4092×1021)(1.67493×1027kg)

=4.0352×106kg


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