How many moles are present in 8g of calcium

1.	How many moles are present in 8g of calcium
Answer» 0.2 moles<br>1 mole of atoms = Gram atomic massSo, 1 mole of Ca atoms=Gram atomic mass of Ca =40gNow, 40 g of calcium = 1 mole of calciumSo, 8 g of calcium =1/40×5 mole =1/5 mole =0.2 moleThus,there are 0.2 mole in 8 g of calcium.<br>8 ×avagadro no.

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