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Question

Calculate the mass of 1 atom of C14.


  1. 2.324 ×1022 gm

  2. 2.324 ×1021 gm

  3. 2.324 ×1024 gm

  4. 2.324 ×1020 gm


Solution

The correct option is B

2.324 ×1021 gm


1 mole of C14 contains = 6.022 ×1023 atoms of C 

6.022 ×1023 atoms of C = 14 grams

1 atom of C = 146.022×1023 = 2.324 ×1023 gm

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