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Question
Calculate the mass of 0.1 mole of the following:
CaCO3
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
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Solution
Molar weight = [40 + 12 + (3 x 16)] = 100 g
∴ 0.1 mole of CaCO3 has mass =100 (molar mass) x 0.1
= 10 g
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