Convert energy from kJ/mol to kJ/kg using molar mass, reverse kJ/kg to kJ/mol, or solve for molar mass with clear unit conversions.

Choose the value you want to calculate.
Required: molar energy and a positive molar mass.
Signed values are allowed.
Use the molar mass of the same substance or formula unit.
Signed values are allowed.
Molar mass must be greater than zero.
Energy values must be nonzero and have matching signs.
This changes the energy basis using molar mass; it does not calculate total energy, heat capacity, or temperature change.
kJ/mol ↔ kJ/kg Conversion Table (M = 18.01528 g/mol, Water)
kJ/mol to kJ/kg kJ/kg to kJ/mol
1 kJ/mol = 55.508 kJ/kg100 kJ/kg = 1.8015 kJ/mol
2 kJ/mol = 111.017 kJ/kg250 kJ/kg = 4.5038 kJ/mol
5 kJ/mol = 277.542 kJ/kg500 kJ/kg = 9.0076 kJ/mol
7.5 kJ/mol = 416.313 kJ/kg750 kJ/kg = 13.5115 kJ/mol
10 kJ/mol = 555.084 kJ/kg1,000 kJ/kg = 18.0153 kJ/mol
15 kJ/mol = 832.627 kJ/kg1,500 kJ/kg = 27.0229 kJ/mol
20 kJ/mol = 1,110.169 kJ/kg2,000 kJ/kg = 36.0306 kJ/mol
25 kJ/mol = 1,387.711 kJ/kg2,500 kJ/kg = 45.0382 kJ/mol
30 kJ/mol = 1,665.253 kJ/kg3,000 kJ/kg = 54.0458 kJ/mol
40 kJ/mol = 2,220.337 kJ/kg4,000 kJ/kg = 72.0611 kJ/mol
50 kJ/mol = 2,775.422 kJ/kg5,000 kJ/kg = 90.0764 kJ/mol
75 kJ/mol = 4,163.133 kJ/kg7,500 kJ/kg = 135.1146 kJ/mol
100 kJ/mol = 5,550.844 kJ/kg10,000 kJ/kg = 180.1528 kJ/mol
120 kJ/mol = 6,661.012 kJ/kg12,000 kJ/kg = 216.1834 kJ/mol
150 kJ/mol = 8,326.265 kJ/kg15,000 kJ/kg = 270.2292 kJ/mol
200 kJ/mol = 11,101.687 kJ/kg20,000 kJ/kg = 360.3056 kJ/mol
250 kJ/mol = 13,877.109 kJ/kg25,000 kJ/kg = 450.3820 kJ/mol
300 kJ/mol = 16,652.531 kJ/kg30,000 kJ/kg = 540.4584 kJ/mol
400 kJ/mol = 22,203.374 kJ/kg40,000 kJ/kg = 720.6112 kJ/mol
500 kJ/mol = 27,754.218 kJ/kg50,000 kJ/kg = 900.7640 kJ/mol
Formulas: kJ/kg = (kJ/mol) ÷ (kg/mol), and kJ/mol = (kJ/kg) × (kg/mol). Here M = 0.01801528 kg/mol.
kJ/mol ↔ kJ/kg Conversion Table (M = 44.0095 g/mol, CO₂)
kJ/mol to kJ/kg kJ/kg to kJ/mol
10 kJ/mol = 227.224 kJ/kg500 kJ/kg = 22.0048 kJ/mol
25 kJ/mol = 568.059 kJ/kg1,000 kJ/kg = 44.0095 kJ/mol
50 kJ/mol = 1,136.118 kJ/kg2,000 kJ/kg = 88.0190 kJ/mol
100 kJ/mol = 2,272.237 kJ/kg5,000 kJ/kg = 220.0475 kJ/mol
200 kJ/mol = 4,544.473 kJ/kg10,000 kJ/kg = 440.0950 kJ/mol
Formulas: kJ/kg = (kJ/mol) ÷ (kg/mol), and kJ/mol = (kJ/kg) × (kg/mol). Here M = 0.0440095 kg/mol.

Kj/Mol To Kj/Kg Conversion Formula

The following formula is used to convert energy from Kj/mol to Kj/kg.

E₍(Kj / kg)) = (E₍(Kj / mol))) / (M₍(g / mol))) × 1000

Variables:

  • E_{(Kj/kg)} is the energy per unit mass (Kj/kg)
  • E_{(Kj/mol)} is the energy per mole (Kj/mol)
  • M_{(g/mol)} is the molar mass (g/mol)

To convert the energy from Kj/mol to Kj/kg, divide the energy value by the molar mass and then multiply by 1000 to convert grams to kilograms.

What is Kj/Mol To Kj/Kg Conversion?

The Kj/Mol to Kj/Kg conversion is a process of converting the energy content of a substance from a per mole basis to a per kilogram basis. This is useful in various fields such as chemistry, physics, and engineering, where it is important to understand the energy content of a substance in relation to its mass rather than the number of moles.

How to Calculate Kj/Mol To Kj/Kg?

The following steps outline how to convert the energy from Kj/mol to Kj/kg.

  1. First, determine the energy per mole (E_{(Kj/mol)}) in Kj/mol.
  2. Next, determine the molar mass (M_{(g/mol)}) in g/mol.
  3. Use the formula E_{(Kj/kg)} = frac{E_{(Kj/mol)}}{M_{(g/mol)}} times 1000 to calculate the energy per kilogram.
  4. Finally, enter the values into the calculator above to verify your result.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Energy per mole (E_{(Kj/mol)}) = 500 Kj/mol

Molar mass (M_{(g/mol)}) = 44 g/mol