The molecular weight of Heptane (C_{7}H_{16}) is 100.2029.

Heptane (C_{7}H_{16}) is an organic compound of two elements: Carbon, and Hydrogen. The molecular weight of Heptane is 100.2029 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

**CALCULATION PROCEDURE: Heptane [C**_{7}H_{16}] Molecular Weight Calculation

_{7}H

_{16}] Molecular Weight Calculation

**Step 1: Find the chemical formula and determine constituent atoms and their number in a Heptane molecule.**You will know different atoms and their number in a Heptane molecule from the chemical formula. The chemical formula of Heptane is C

_{7}H

_{16}. The chemical formula shows that one Heptane molecule consists of seven Carbon (C) atoms and sixteen Hydrogen (H) atoms.

**Step 2: Find out the atomic weights of each atom (from the periodic table). **

Atomic weight of Carbon (C): 12.0107 (Ref: Jlab-ele006)

Atomic weight of Hydrogen (H): 1.008 (Ref: Lanl-1)

**Step 3: Calculate the total weight of each atom in a Heptane molecule by multiplying its atomic weight by its number.**

Number of Carbon atoms in Heptane: 7

Atomic weight of Carbon (C): 12.0107

Total weight of Carbon atoms in Heptane: 12.0107 x 7 = 84.0749

Number of Hydrogen atoms in Heptane: 16

Atomic weight of Hydrogen (H): 1.008

Total weight of Hydrogen atoms in Heptane: 1.008 x 16 = 16.128

**Step 4: Calculate the molecular weight of Heptane by adding up the total weight of all atoms.**

Molecular weight of Heptane: 84.0749 (Carbon) + 16.128 (Hydrogen) = 100.2029

So the molecular weight of Heptane is 100.2029.

Heptane [C_{7}H_{16}] Molecular Weight Calculation

Molecular weight of Heptane [C_{7}H_{16}] | |||

Constituent atoms | Number of each atom | Atomic weight | Total weight |

Carbon (C) | 7 | 12.0107 | 84.0749 |

Hydrogen (H) | 16 | 1.008 | 16.128 |

Molecular weight of Heptane [C_{7}H_{16}]: | 100.2029 |

## REFERENCES:

- Lanl-1: https://periodic.lanl.gov/1.shtml
- Jlab-ele006: https://education.jlab.org/itselemental/ele006.html