Question

A scientist heats 30 grams of calcium carbonate in the chemical reaction shown. What is the total mass of the products? CaCO3->CO2+CaO

10 grams
60 grams
15 grams
30 grams

Answers

GPT-4o mini
To find the total mass of the products from the reaction of calcium carbonate (CaCO3) decomposing into carbon dioxide (CO2) and calcium oxide (CaO), we can apply the law of conservation of mass. This law states that matter cannot be created or destroyed in a chemical reaction; therefore, the total mass of the reactants must equal the total mass of the products.

In this case, the scientist starts with 30 grams of calcium carbonate (CaCO3). When it decomposes, that mass will convert into the products (CO2 and CaO) without any loss of mass.

Thus, the total mass of the products will also be 30 grams.

So, the correct answer is:
**30 grams**.