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plain how to calculate the number of atoms in 31.1 g of Au.

Sagot :

Answer:

See Below

Explanation:

mole weight of Au ( gold) = 196.97 gm

  31.1 / 196.97    = number of moles of Au

  Number of moles * Avagadro's Number = number of atoms

31.1 / 196.97      *    6.022 x 10^23 = 9.508 x 10^22 atoms

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