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Molar mass of Zinc = 65.4 g mol-1
No. of moles of 20.0 g of Zinc = 20.0 / 65.4 = 0.305810397 mol
No. of atoms = 0.305810397 L (where L is the Avogadro constant)
= 1.8416 x 1023
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Cathlyn Emes
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