Use the chemical reaction to answer the question.

Question

​CaCO3→CO2​+CaO
​
CaCO
3
→
CO
2
​
+
CaO
A scientist heats 30 grams of calcium carbonate (CaCO3
CaCO
3
) in the chemical reaction shown. What is the total mass of the products?

(1 point)
Responses

10 grams
10 grams

60 grams
60 grams

15 grams
15 grams

30 grams

Answer 1

In a chemical reaction, the law of conservation of mass states that the total mass of the reactants must equal the total mass of the products.

In this reaction:

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

If the scientist starts with 30 grams of calcium carbonate (CaCO3), then the total mass of the products (CO2 and CaO) must also be 30 grams.

Therefore, the answer is:

30 grams.