# Propylene [C3H6] Molecular Weight Calculation

The molecular weight of Propylene (C3H6) is 42.0801. Propylene (C3H6) is an organic compound of two elements: Carbon, and Hydrogen. The molecular weight of Propylene is 42.0801 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

# CALCULATION PROCEDURE: Propylene  [C3H6] Molecular Weight Calculation

Step 1: Find the chemical formula and determine constituent atoms and their number in a Propylene molecule.
You will know different atoms and their number in a Propylene molecule from the chemical formula. The chemical formula of Propylene is C2H4. The chemical formula shows that one Propylene molecule consists of three Carbon (C) atoms and six 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 Propylene molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Propylene: 3
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in Propylene: 12.0107 x 3 = 36.0321

Number of Hydrogen atoms in Propylene: 6
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Propylene: 1.008 x 6 = 6.048

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

Molecular weight of Propylene: 36.0321 (Carbon) + 6.048 (Hydrogen) = 42.0801

So the molecular weight of Propylene is 42.0801.

Propylene [C3H6] Molecular Weight Calculation

## REFERENCES:

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