The molar mass of calcium nitrate, Ca NO3 2, can be calculated by adding the molar masses of its constituent elements: calcium Ca , nitrogen N , and oxygen O .Calcium Ca has a molar mass of 40.08 g/mol.Nitrogen N has a molar mass of 14.01 g/mol.Oxygen O has a molar mass of 16.00 g/mol.In the formula Ca NO3 2, there is one calcium atom, two nitrogen atoms, and six oxygen atoms. So, the molar mass of calcium nitrate is: 1 40.08 g/mol Ca + 2 14.01 g/mol N + 6 16.00 g/mol O = 40.08 + 28.02 + 96.00 = 164.10 g/molThe molar mass of calcium nitrate, Ca NO3 2, is 164.10 g/mol.