Question

Calcium carbonate decomposes on heating according to the following equation
CaCO2 = CaO + CO2
The number of moles of co, obtained by the decomposition of 50g of CaCO, is what answer​

Answer 1

From th eequation we got that one mole of CaCO3 yields one mole CO2

Molar mass of CaCO3 = 100 u

Given mass of CaCO3 = 50g

Number of moles of CaCO3 = 50/100 = 0.5 moles

Moles of CaCO3 = Moles of CO2

Moles of CO2 = 0.5 moles

mass of CO2 obtained.= 0.5 x 44 = 22g

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