Answers

2015-05-22T10:23:29+05:30
1 mole of carbon atoms contains 6.023 × 10²³ atoms
so 6.023 × 10²³ atoms weighs 12 grams
so 1                 atom weighs  12/(6.023 × 10²³) grams = 2×10⁻²³ grams 
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