Question

calcium carbonate, ( caco_3 ), decomposes when heated to calcium oxide (( cao )) and carbon dioxide (( co_2 )). if 100 g of calcium carbonate is allowed to decompose, 56 g of calcium oxide is produced. what mass of carbon dioxide is produced by the decomposition?
______ g
your answer should be rounded to the nearest whole number. do not include units in your answer.

Explanation:

Step1: Use the law of conservation of mass

According to the law of conservation of mass, the mass of reactants equals the mass of products.
$$\text{Mass of }CaCO_3=\text{Mass of }CaO+\text{Mass of }CO_2$$

Step2: Rearrange the formula to find the mass of \(CO_2\)

$$\text{Mass of }CO_2=\text{Mass of }CaCO_3 - \text{Mass of }CaO$$
Substitute the given values: \(\text{Mass of }CO_2 = 100 - 56\)

Step3: Calculate the result

\(100 - 56=44\)

Answer:

44