Question

17 when calcium carbonate (caco3) is heated, it decomposes to form calcium oxide (cao) and carbon dioxide (co2). the equation below shows this reaction. caco3 → cao + co2 reactant products in this reaction, the mass of caco3 a equals the mass of cao minus the mass of co2 b is less than the mass of cao plus the mass of co2 c equals the mass of cao plus the mass of co2 d is greater than the mass of cao plus the mass of co2

Explanation:

Step1: Recall the law of conservation of mass

The law of conservation of mass states that in a chemical reaction, the total mass of the reactants is equal to the total mass of the products.

Step2: Analyze the reaction

In the reaction \(CaCO_3
ightarrow CaO + CO_2\), \(CaCO_3\) is the reactant and \(CaO\) and \(CO_2\) are the products.
According to the law of conservation of mass, \(mass\ of\ CaCO_3=mass\ of\ CaO + mass\ of\ CO_2\)

Answer:

C. equals the mass of CaO plus the mass of CO₂