CaCO3 | MCQs

Explanation

The molar mass of CaCO₃ is approximately 100 g/mol.

The molar mass of calcium (Ca) in CaCO₃ is about 40 g/mol.

The proportion of calcium in CaCO₃ is  40/ 100 = 0.4

Therefore, in 0.1 g of CaCO₃, the amount of calcium is  0.1×0.4=0.04 g.

Explanation

The molar mass of calcium carbonate is calculated as: 

Ca=40g/mol,C=12g/mol,O₃=48g/mol 

Total=40+12+48=100g/mol