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Molecules and Atomicity

How many mole...

Question

How many moles of calcium carbonate are present in 10g of the substance?

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Solution

Mass of CaCO3 = 10g
Molar mass of CaCO3 = 40 + 12 +3x16 = 100g/mol
moles = mass given / molar mass
=10g/100g/mol
= 0.10 mol

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