CaCO3 --> CO2 + CaO
A scientist heats 30 of calcium carbonate (CaCO3) in the chemical reaction shown. What is the total mass of the products?
a 30 grams
b 10 grams
c 60 grams
d 15 grams
To calculate the total mass of the products, we need to determine the molar mass of each product and then calculate the total mass using stoichiometry.
The molar mass of CO2 (carbon dioxide) is 12.01 g/mol for carbon + 2 * 16.00 g/mol for oxygen = 44.01 g/mol.
The molar mass of CaO (calcium oxide) is 40.08 g/mol for calcium + 16.00 g/mol for oxygen = 56.08 g/mol.
Since the balanced equation has a 1:1 ratio between CaCO3 and CO2 and between CaCO3 and CaO, we can assume that the masses will also have that ratio.
Given that the initial mass of CaCO3 is 30 grams, the total mass of the products will be:
30 grams of CaCO3 --> 44.01 grams of CO2 + 56.08 grams of CaO
Total mass of products = 44.01 grams + 56.08 grams = 100.09 grams
Therefore, the correct option is not provided in the answer choices. The total mass of the products is 100.09 grams.