The mass of carbon dioxide, CO₂ given off is 44 g
From the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another,
we understood that the total mass of a reactant is equal to the total mass of products i.e
Total mass of reactant = Total mass of products
With the above information in mind, we can obtain the mass of carbon dioxide, CO₂ given off as follow:
CaCO₃ —> CaO + CO₂
Mass of CaCO₃ = 100 g
Mass of CaO = 56 g
Mass of CO₂ =?
Total mass of reactant = Total mass of products
Mass of CaCO₃ = mass of CaO + mass of CO₂
100 = 56 + mass of CO₂
Collect like terms
Mass of CO₂ = 100 – 56
Mass of CO₂ = 44 g
Therefore, the mass of carbon dioxide, CO₂ given off is 44 g
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