# Barium Sulfate [BaSO4] Molecular Weight Calculation

The molecular weight of Barium sulfate [BaSO4] is 233.3906.

Barium sulfate [BaSO4] is an inorganic compound of three elements: Barium, Sulfur, and Oxygen. The molecular weight of Barium sulfate is 233.3906 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Barium, Sulfur, and Oxygen.

CALCULATION PROCEDURE: Barium sulfate [BaSO4] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Barium sulfate molecule.
From the chemical formula, you will know different atoms and their number in a Barium sulfate molecule. The chemical formula of Barium sulfate is BaSO4. From the chemical formula, you can find that one molecule of Barium sulfate has one Barium (Ba) atom, one Sulfur (S) atom, and four Oxygen (O) atoms.

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

Atomic weight of Barium (Ba): 137.327 (Ref: Pubchem-56, Ciaaw-barium)
Atomic weight of Sulfur (S): 32.066 (Ref: Jlab-ele016)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)

Step 3: Calculate the molecular weight of Barium sulfate by adding the total weight of all atoms.

Number of Barium atoms in Barium sulfate: 1
Atomic weight of Barium: 137.327
Total weight of Barium atoms in Barium sulfate: 137.327 x 1 = 137.327

Number of Sulfur atoms in Barium sulfate: 1
Atomic weight of Sulfur: 32.066
Total weight of Sulfur atoms in Barium sulfate: 32.066 x 1 = 32.066

Number of Oxygen atoms in Barium sulfate: 4
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Barium sulfate: 15.9994 x 4 = 63.9976

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

Molecular weight of Barium sulfate [BaSO4]: 137.327 (Barium) + 32.066 (Sulfur) + 63.9976 (Oxygen) = 233.3906

So the molecular weight of Barium sulfate is 233.3906.

Barium sulfate [BaSO4] Molecular Weight Calculation

## REFERENCES:

• Jlab-ele016: https://education.jlab.org/itselemental/ele016.html
• Pubchem-56: https://pubchem.ncbi.nlm.nih.gov/element/56
• Ciaaw-barium: https://www.ciaaw.org/barium.htm
• Jlab-ele056: https://education.jlab.org/itselemental/ele056.html
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html