How many moles of silver atoms are there in 1.8 x 10 20 atoms of silver?

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Chemistry

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7 July, 17:01

How many moles of silver atoms are there in 1.8 x 10 20 atoms of silver?

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Answers (1)

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Jan Stanley · Answer 1

Answer is: 3·10⁻⁴ mol of silver atoms.

N (silver-Ag) = 1,8·10²⁰.

n (Ag) = N:Na.

n (Ag) = 1,8·10²⁰ : 6·10²³ 1/mol = 0,0003 mol = 3·10⁻⁴ mol.

N - number of atoms of silver.

Na - Avogadro number or Avogadro constant (6·10²³ mol⁻¹).¹

n - amount of substance.