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 Form 3 Chemistry Questions and Answers on The Mole

A weighed sample of crystalline sodium carbonate #(Na_2CO_3.nH_2O)# was heated in a crucible until there was no further change in mass. The mass of the sample reduced by 14.5%. Calculate the number of moles(n) of the water of crystallization. (Na =23, O=16,C=12,H=1)

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