# Bromobenzene [C6H5Br] Molecular Weight Calculation

The molecular weight of Bromobenzene (C6H5Br) is 157.0082.

Bromobenzene (C6H5Br) is an organic compound of three elements: Carbon, Hydrogen, and Bromine. The molecular weight of Bromobenzene is 157.0082 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

# CALCULATION PROCEDURE: Bromobenzene  [C6H5Br] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Bromobenzene molecule.
You will know different atoms and their number in a Bromobenzene molecule from the chemical formula. The chemical formula of Bromobenzene is C6H5Br. From the chemical formula, you can find that one molecule of Bromobenzene consists of six Carbon (C) atoms, five Hydrogen (H) atoms, and one Bromine (Br) atom.

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)
Atomic weight of Bromine (Br)
: 79.904 (Ref: Jlab-ele035)

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

Number of Carbon atoms in Bromobenzene: 6
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in Bromobenzene: 12.0107 x 6 = 72.0642

Number of Hydrogen atoms in Bromobenzene: 5
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Bromobenzene: 1.008 x 5 = 5.04

Number ofBromine atoms in Bromobenzene: 1
Atomic weight of Bromine (Br): 79.904
Total weight ofBromine atoms in Bromobenzene: 79.904 x 1 = 70.9054

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

Molecular weight of Bromobenzene: 72.0642 (Carbon) + 5.04 (Hydrogen) + 70.9054 (Bromine) = 157.0082

So the molecular weight of Bromobenzene is 157.0082.

Bromobenzene [C6H5Br] Molecular Weight Calculation

## REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml
• Jlab-ele006: https://education.jlab.org/itselemental/ele006.html
• Jlab-ele035: https://education.jlab.org/itselemental/ele035.htm