Calculate the number of Cu atoms in 0.635g of Cu. -Chemistry

Calculate the number of Cu atoms in 0.635g of Cu. -Chemistry
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Answer :

No. of moles of Cu = Mass of Cu/Atomic mass = 0.635/63.5 =0.01 mole No. of Cu atoms = No. of moles × Avogadro constant = 0.01 × 6.022 × 1023 = 6.022 × 1023 Cu atoms.
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