Question

What quantity of limestone on heating will give 56 kg of ca o?

Answer 1

Molar mass of CaO is 56g/mol

Thus, 56 kg = 1000 moles of CaO

As these constitute CaCO3(limestone)

Amount of CaCO3 = 1000 moles

Since molar mass of CaCO3 = 100g/mol

Amount of CaCO3 = 100,000 grams or 100 kg