Molar mass of aspirin (C9H8O4)

The molar mass of aspirin (C9H8O4) is 180.159 g/mol.

acetylsalicylic acid · ASA

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Carbon	× 9	12.011	= 108.099
Hydrogen	× 8	1.008	= 8.064
Oxygen	× 4	15.999	= 63.996
Total			180.159 g/mol

Percent composition by element

Carbon 60%
Hydrogen 4.48%
Oxygen 35.52%

Aspirin facts

Aspirin, or acetylsalicylic acid, is a white crystalline solid and one of the most widely used medicines in the world.
It relieves pain, fever, and inflammation, and doctors sometimes prescribe low daily doses to lower the risk of heart attack and stroke.
In moist air aspirin slowly breaks down into salicylic acid and acetic acid, which is why old tablets can smell like vinegar.

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 C₇H₆O₃ Salicylic acid CH₃OH Methanol

FAQ

What is the molar mass of C9H8O4?

The molar mass of aspirin (C9H8O4) is 180.159 g/mol.

How do you calculate the molar mass of C9H8O4?

Multiply the atomic mass of each element by the number of its atoms in C9H8O4, then add the results: 9 × 12.011 (C) + 8 × 1.008 (H) + 4 × 15.999 (O) = 180.159 g/mol.

What percentage of C9H8O4 is Carbon?

Carbon makes up 60% of the mass of aspirin (C9H8O4).