The molecular weight of Ethylene (C_{2}H_{4}) is 28.0534.

Ethylene (C_{2}H_{4}) is an organic compound of two elements: Carbon, and Hydrogen. The molecular weight of Ethylene is 28.0534 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

**CALCULATION PROCEDURE: Ethylene [C**_{2}H_{4}] Molecular Weight Calculation

_{2}H

_{4}] Molecular Weight Calculation

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

_{2}H

_{4}. The chemical formula shows that one Ethylene molecule consists of two Carbon (C) atoms and four 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 an Ethylene molecule by multiplying its atomic weight by its number.**

Number of Carbon atoms in Ethylene: 2

Atomic weight of Carbon (C): 12.0107

Total weight of Carbon atoms in Ethylene: 12.0107 x 2 = 24.0214

Number of Hydrogen atoms in Ethylene: 4

Atomic weight of Hydrogen (H): 1.008

Total weight of Hydrogen atoms in Ethylene: 1.008 x 4 = 4.032

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

Molecular weight of Ethylene: 24.0214 (Carbon) + 4.032 (Hydrogen) = 28.0534

So the molecular weight of Ethylene is 28.0534.

Ethylene [C_{2}H_{4}] Molecular Weight Calculation

Molecular weight of Ethylene [C_{2}H_{4}] | |||

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

Carbon (C) | 2 | 12.0107 | 24.0214 |

Hydrogen (H) | 4 | 1.008 | 4.032 |

Molecular weight of Ethylene [C_{2}H_{4}]: | 28.0534 |

## REFERENCES:

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