Molar mass of calcium sulfate dihydrate (CaSO4·2H2O)

The molar mass of calcium sulfate dihydrate (CaSO4·2H2O) is 172.164 g/mol.

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Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Calcium	× 1	40.078	= 40.078
Sulfur	× 1	32.06	= 32.06
Oxygen	× 6	15.999	= 95.994
Hydrogen	× 4	1.008	= 4.032
Total			172.164 g/mol

Percent composition by element

Calcium 23.28%
Sulfur 18.62%
Oxygen 55.76%
Hydrogen 2.34%

Try another formula

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

Could not read that formula

Related compounds

H₂SO₄ Sulfuric acid KAl(SO₄)₂·12H₂O Potassium alum Ca(OH)₂ Calcium hydroxide CuSO₄·5H₂O Copper(II) sulfate pentahydrate H₂SO₃ Sulfurous acid CaSO₄ Calcium sulfate

FAQ

What is the molar mass of CaSO4·2H2O?

The molar mass of calcium sulfate dihydrate (CaSO4·2H2O) is 172.164 g/mol.

How do you calculate the molar mass of CaSO4·2H2O?

Multiply the atomic mass of each element by the number of its atoms in CaSO4·2H2O, then add the results: 1 × 40.078 (Ca) + 1 × 32.06 (S) + 6 × 15.999 (O) + 4 × 1.008 (H) = 172.164 g/mol.

What percentage of CaSO4·2H2O is Oxygen?

Oxygen makes up 55.76% of the mass of calcium sulfate dihydrate (CaSO4·2H2O).