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  • Calculate the number of atoms in 39.4 g gold. The molar mass of gold is 197 g mole-^1

Calculate the number of atoms in 39.4 g gold. The molar mass of gold is 197 g mole-1.

Answers (1)

Number of atoms on 197 g gold = 6.023 \times 10^{23}

Number of atoms in 1g of gold, n

 =6.023 \times \frac{10^{23}}{197}

Hence, number of atoms in 34g of gold =

34 \times \left (6.023 \times \frac{10^{23}}{197} \right ) = 1.2 \times 10^{23} atoms

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infoexpert24

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