Chemistry
Elements and Compounds

How many atoms are in 1 gram of gold?

Answer

Wiki User
02/02/2010

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Golds molecular weight is 196.96 g/mol

Thus, 1g of gold is (1g /196.96 g/mol) = 0.005 mol

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1 mol is 6.022 × 1023 atoms (Avogadro's Number)

Thus, 0.005 mol is (0.005 mol x 6.022 × 1023 atoms/mol) = 3.057 x 1021 atoms

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Therefore 1g of gold has APPROXIMATELY 3.057 x 1021 atoms