Molar mass of calcium carbonate (CaCO3)

The molar mass of calcium carbonate (CaCO3) is 100.086 g/mol.

limestone · chalk

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Calcium	× 1	40.078	= 40.078
Carbon	× 1	12.011	= 12.011
Oxygen	× 3	15.999	= 47.997
Total			100.086 g/mol

Percent composition by element

Calcium 40.04%
Carbon 12%
Oxygen 47.96%

Calcium carbonate facts

Calcium carbonate is a white, odorless solid that occurs naturally as the minerals calcite and aragonite.
It makes up limestone, marble, and chalk as well as seashells, eggshells, and coral, and it is used in cement, antacids, and calcium supplements.
It fizzes and releases carbon dioxide when it reacts with acids, and strong heating breaks it down into calcium oxide and carbon dioxide.

Try another formula

H₂O NaCl CO₂ C₆H₁₂O₆ H₂SO₄ Ca(OH)₂ CuSO₄·5H₂O C₈H₁₀N₄O₂

Could not read that formula

Related compounds

CaMg(CO₃)₂ Dolomite Ca(HCO₃)₂ Calcium bicarbonate Ca(CH₃COO)₂ Calcium acetate CaC₂O₄ Calcium oxalate NaHCO₃ Sodium bicarbonate C₂H₅OH Ethanol

FAQ

What is the molar mass of CaCO3?

The molar mass of calcium carbonate (CaCO3) is 100.086 g/mol.

How do you calculate the molar mass of CaCO3?

Multiply the atomic mass of each element by the number of its atoms in CaCO3, then add the results: 1 × 40.078 (Ca) + 1 × 12.011 (C) + 3 × 15.999 (O) = 100.086 g/mol.

What percentage of CaCO3 is Oxygen?

Oxygen makes up 47.96% of the mass of calcium carbonate (CaCO3).