Molar mass

Molar Mass of Heptane

The molar mass of heptane (C7H16) is 100.205 g/mol.

Heptane at a glance

PropertyValue
Molar mass100.205 g/mol
Molecular weight100.205 u
Chemical formulaC7H16
Monoisotopic mass100.125201 u
CAS number142-82-5
PubChem CID8900

How to calculate the molar mass of heptane

7 × 12.011 + 16 × 1.008 = 100.205 g/mol

  1. Count the atoms in C7H16: C 7, H 16.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 100.205 g/mol.

Elemental composition of heptane

ElementAtomsAtomic weightMass (g/mol)Mass %
C Carbon712.01184.07783.905%
H Hydrogen161.00816.12816.095%

Grams and moles of heptane

AmountEquals
1 g0.0099795 mol
10 g0.099795 mol
100 g0.99795 mol
0.1 mol10.021 g
1 mol100.21 g
1 g, in particles6.0098 × 10^21