Final answer:
The molar mass of calcium carbonate (CaCO3) is calculated by adding together the molar masses of calcium, carbon, and oxygen, resulting in 100.09 g/mol.
Step-by-step explanation:
The molar mass of a compound is the mass in grams of one mole of its representative particles, which could be atoms, molecules, or formula units of ionic compounds. To determine the molar mass of calcium carbonate (CaCO3), we need to calculate the molar masses of each atom in the chemical formula and add them together:
- Calcium (Ca): 40.08 g/mol
- Carbon (C): 12.01 g/mol
- Oxygen (O): 16.00 g/mol x 3 = 48.00 g/mol
By adding these values together, the molar mass of CaCO3 is:
40.08 g (Ca) + 12.01 g (C) + 48.00 g (O) = 100.09 g/mol
This calculation is essential for conversions between moles and mass and is fundamental in chemical reactions to ensure that the mass of the reactants equals the mass of the products, conforming with the law of conservation of mass.