Find the Molar Mass of Calcium Carbonate

Answer:

Calcium has an atomic mass of 40u, and Oxygen has an atomic mass of 16u and Carbon has an atomic mass of 12u. There is just one carbon atom in the universe. As a result, the molecular mass of CaCO₃ is 100 u  or 100 g/mol.

The molecular mass (m) of a molecule is measured in daltons (Da or u). Because various isotopes of an element are present in distinct molecules of the same substance, their molecular weights might vary.

To determine the molar mass, we must first comprehend the procedure for calculating the molar mass of any compound, after which we will proceed with the supplied substance using this procedure. To calculate the molar mass of a specific substance, we will utilise the atomic masses of the constituent elements from the periodic table.

CaCO₃ is a given compound.

To determine molecular mass, we’ll first go through the steps below.

• Find out what the molecule’s molecular formula is.
• Determine the atomic mass of each element in the molecule using the periodic table.
• Multiply the atomic mass of each element in the molecule by the number of its atoms. The subscript following the element symbol in the molecular formula represents this number.
• For each atom in the molecule, add these values together.

The total will be the compound’s molecular mass.

To get the molecular mass of CaCO₃, we must first determine the atomic masses of carbon (C), calcium (Ca) and oxygen (O).

Atomic mass of Ca = 40 u

Atomic mass of C = 12 u

Atomic mass of O = 16u

Multiply each atom’s atomic mass by the number of atoms in the compound.

CaCO₃ molecular mass:

= 40u + 12u + ( 16 3)u

= 52u + 48 u

= 100 u

As a result, it CaCO₃ has a molar mass of 100 g/mol.