How many carbon atoms are there in a diamond (pure carbon) with a mass of 51 mg?

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Chemistry

Keira Jefferson

11 January, 01:02

How many carbon atoms are there in a diamond (pure carbon) with a mass of 51 mg?

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Carlos · Answer 1

2.557x10^23 atoms

The atomic mass of carbon is 12.0107. So the number of moles of carbon in the 51 mg diamond is 0.051 / 12.0107 = 0.004246 moles Now multiply by avogadro's number (6.0221409x10^23) to get the number of atoms. Giving 0.004246 * 6.0221409x10^23 = 2.5571298x10^21 Rounded to a reasonable precision gives you 2.557x10^23 atoms