# Antimony(III) Oxide [Sb2O3] Molecular Weight Calculation

The molecular weight of Antimony(III) oxide [Sb2O3] is 291.5182. Antimony(III) oxide [Sb2O3] is an inorganic compound of two elements: Antimony and Oxygen. The molecular weight of Antimony(III) oxide is 291.5182 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Antimony and Oxygen.

# CALCULATION PROCEDURE: Antimony(III) oxide [Sb2O3] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in an Antimony(III) oxide molecule.
You will know different atoms and their number in an Antimony(III) oxide molecule from the chemical formula. The chemical formula of Antimony(III) oxide is [Sb2O3]. From the chemical formula, you can find that one molecule of Antimony(III) oxide has two Antimony (Sb) and two Oxygen (O) atoms.

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

Atomic weight of Antimony (Sb): 121.76 (Ref: Jlab-ele051, ciaaw-antimony)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)

Step 3: Calculate the total weight of each atom in an Antimony(III) oxide molecule by multiplying its atomic weight by its number.

Number of Antimony (Sb) atoms in Antimony(III) oxide: 2
Atomic weight of Antimony (Sb): 121.76
Total weight of Antimony(III) atoms in Antimony(III) oxide: 121.76 x 2 = 243.52

Number of Oxygen atoms in Antimony(III) oxide: 3
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Antimony(III) oxide: 15.9994 x 3 = 47.9982

Step 4: Calculate the molecular weight of Antimony(III) oxide by adding up the total weight of all atoms.

Molecular weight of Antimony(III) oxide: 243.52 (Antimony) + 47.9982 (Oxygen) = 291.5182

So the molecular weight of Antimony(III) oxide is 291.5182.

Antimony(III) oxide [Sb2O3] Molecular Weight Calculation

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