10.0 g of `CaCO_(3)` on heating gave 4.4 g of `CO_(2)` and 5.6 g of CaO. Show that these observations are in agreement with the law of conservation of mass.

Explanation

To show that the observations are in agreement with the law of conservation of mass, we will follow these steps:

### Step 1: Understand the Law of Conservation of Mass
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. This means that the total mass of the reactants before the reaction must equal the total mass of the products after the reaction.

### Step 2: Identify the Mass of the Reactant
In this case, the reactant is calcium carbonate (CaCO₃). According to the problem, the mass of calcium carbonate used is:
- Mass of CaCO₃ = 10.0 g
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