Use the chemical reaction to answer the question.

​CaCO3→CO2​+CaO

A scientist heats 30 grams of calcium carbonate ( CaCO3
) in the chemical reaction shown. What is the total mass of the products?

(1 point)
Responses

30 grams
30 grams

15 grams
15 grams

60 grams
60 grams

10 grams

1 answer

In the chemical reaction given:

\[ \text{CaCO}_3 \rightarrow \text{CO}_2 + \text{CaO} \]

the law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. This means that the total mass of the reactants must equal the total mass of the products.

If a scientist starts with 30 grams of calcium carbonate (CaCO3), upon heating, the products (CO2 and CaO) will also have a total mass of 30 grams.

Therefore, the correct response is:

30 grams