Question

Calculate the weight of CuO formed when 200g of Copper carbonate is heated​

Answer 1

Mass of CaCO₃ in 200 grams of 90% pure calcium carbonate is 180 grams

no. of moles of CaCO₃ in 180 grams of CaCO₃ is 180/100=1.8 moles

so, 1.8 moles each of CaO and CO₂ are formed by Decomposition of 1.8 moles of CaCO₃.

CaCO₃------------Δ------------->>> CaO + CO₂

mass of 1 mole CaO is 56 grams

mass of 1.8 moles of CaO is 56*1.8=100.8 grams

Explanation:

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