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If one mole of carbon atoms weighs 12 gram, what is the mass (in gram) of 1 atom of carbon?

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One mole of carbon atoms weighs 12g (Given) 

i.e., mass of 1 mole of carbon atoms = 12g 

Then, mass of 6.022× 1023 number of carbon atoms = 12g 

Therefore, mass of 1 atom of carbon = 12/ 6.022×1023

= 1.9926 × 10– 23

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