Molar mass of formaldehyde (CH2O)

The molar mass of formaldehyde (CH2O) is 30.026 g/mol.

methanal

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Carbon	× 1	12.011	= 12.011
Hydrogen	× 2	1.008	= 2.016
Oxygen	× 1	15.999	= 15.999
Total			30.026 g/mol

Percent composition by element

Carbon 40%
Hydrogen 6.71%
Oxygen 53.28%

Try another formula

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

Could not read that formula

Related compounds

NaHCO₃ Sodium bicarbonate C₂H₅OH Ethanol CH₃COOH Acetic acid C₇H₆O₂ Benzoic acid C₉H₈O₄ Aspirin C₇H₆O₃ Salicylic acid

FAQ

What is the molar mass of CH2O?

The molar mass of formaldehyde (CH2O) is 30.026 g/mol.

How do you calculate the molar mass of CH2O?

Multiply the atomic mass of each element by the number of its atoms in CH2O, then add the results: 1 × 12.011 (C) + 2 × 1.008 (H) + 1 × 15.999 (O) = 30.026 g/mol.

What percentage of CH2O is Oxygen?

Oxygen makes up 53.28% of the mass of formaldehyde (CH2O).