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?
a. 10 grams
b. 30 grams
c. 60 grams
d. 15 grams
According to the chemical reaction, when calcium carbonate (CaCO3) is heated, it decomposes to form carbon dioxide (CO2) and calcium oxide (CaO).
CaCO3 > CO2 + CaO
To find the total mass of the products, we need to find the molar masses of CO2 and CaO.
The molar mass of CO2 is 44 g/mol and the molar mass of CaO is 56 g/mol.
Since the molar mass of CaCO3 is 100 g/mol (40 g/mol for Ca + 12 g/mol for C + 48 g/mol for 3O), we can calculate the total mass of the products as follows:
Mass of CO2 = (44 g/mol) / (100 g/mol) * 30 g = 13.2 g
Mass of CaO = (56 g/mol) / (100 g/mol) * 30 g = 16.8 g
Total mass of the products = Mass of CO2 + Mass of CaO = 13.2 g + 16.8 g = 30 g
Therefore, the total mass of the products is 30 grams, option b.