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?
The total mass of the products can be calculated by first finding the molar mass of each product and then calculating the total mass.
1. Molar mass of CO2 (carbon dioxide):
- The molar mass of carbon (C) is 12.01 g/mol
- The molar mass of oxygen (O) is 16.00 g/mol
- Therefore, the molar mass of CO2 is 12.01 + (2 * 16.00) = 44.01 g/mol
2. Molar mass of CaO (calcium oxide):
- The molar mass of calcium (Ca) is 40.08 g/mol
- The molar mass of oxygen (O) is 16.00 g/mol
- Therefore, the molar mass of CaO is 40.08 + 16.00 = 56.08 g/mol
3. Calculate the number of moles of CaCO3:
- The molar mass of CaCO3 is 40.08 + 12.01 + (3 * 16.00) = 100.09 g/mol
- 30 grams of CaCO3 is equivalent to 30 / 100.09 = 0.299 moles
4. Calculate the total mass of the products:
- From the balanced chemical equation, 1 mole of CaCO3 produces 1 mole of CO2 and 1 mole of CaO
- Therefore, 0.299 moles of CaCO3 will produce 0.299 moles each of CO2 and CaO
- Total mass of products = (0.299 * 44.01) + (0.299 * 56.08) = 13.17 + 16.77 = 29.94 grams
Therefore, the total mass of the products CO2 and CaO is 29.94 grams.