A sample of carbon-12 a mass of 6.00g. How many atoms of carbon-12 are in the sample?

Question

Willow Short

Chemistry

9 September, 02:41

A sample of carbon-12 a mass of 6.00g. How many atoms of carbon-12 are in the sample?

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Answers (1)

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Haley Moran · Answer 1

Answer is: there are 3·10²³ atoms of carbon-12.

m (C) = 6.00 g; mass of carbon.

M (C) = 12 g/mol.

n (C) = m (C) : M (C).

n (C) = 6 g : 12 g/mol.

n (C) = 0.5 mol.

N (C) = Na · n (C).

n (C) = 6·10²³ 1/mol · 0.5 mol.

n (C) = 3·10²³.

n - amount of substance.

M - molar mass.

Na - Avogadro number.