Molar mass

Molar Mass of Iodomethane

The molar mass of iodomethane (CH3I) is 141.935 g/mol.

Iodomethane at a glance

PropertyValue
Molar mass141.935 g/mol
Molecular weight141.935 u
Chemical formulaCH3I
Monoisotopic mass141.927947 u
CAS number74-88-4
PubChem CID6328

How to calculate the molar mass of iodomethane

1 × 12.011 + 3 × 1.008 + 1 × 126.9 = 141.935 g/mol

  1. Count the atoms in CH3I: C 1, H 3, I 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 141.935 g/mol.

Elemental composition of iodomethane

ElementAtomsAtomic weightMass (g/mol)Mass %
C Carbon112.01112.0118.4623%
H Hydrogen31.0083.0242.1306%
I Iodine1126.9126.989.407%

Grams and moles of iodomethane

AmountEquals
1 g0.0070455 mol
10 g0.070455 mol
100 g0.70455 mol
0.1 mol14.194 g
1 mol141.94 g
1 g, in particles4.2429 × 10^21