The molecular weight of Heptane (C₇H₁₆) is 100.2029.

Heptane (C₇H₁₆) 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  [C₇H₁₆] 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 C₇H₁₆. 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 [C₇H₁₆] Molecular Weight Calculation

REFERENCES:

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

See also:

• Hydrogen chloride molecular weight calculation