# Acetone [(CH3)2CO] Molecular Weight Calculation

The molecular weight of Acetone [(CH3)2CO] is 58.0795.

Acetone ((CH3)2CO) is an organic compound of three elements: Carbon, Hydrogen, and Oxygen. The molecular weight of Acetone is 58.0795 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

# CALCULATION PROCEDURE: Acetone [(CH3)2CO] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in an Acetone molecule.
You will know different atoms and their number in an Acetone molecule from the chemical formula. The chemical formula of Acetone is C3H6O1. From the chemical formula, you can find that one molecule of Acetone has three Carbon (C) atoms, six Hydrogen (H) atoms, and one Oxygen (O) 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 Oxygen (O): 15.9994 (Ref: Jlab-ele008)

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

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

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

Number of Oxygen atoms in Acetone: 1
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Acetone: 15.9994 x 1 = 15.9994

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

Molecular weight of Acetone: 36.0321 (Carbon) + 6.048 (Hydrogen) + 15.9994 (Oxygen) = 58.0795

So the molecular weight of Acetone is 58.0795.

Acetone [(CH3)2CO] Molecular Weight Calculation

## REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml
• Pubchem-Hydrogen : https://pubchem.ncbi.nlm.nih.gov/element/Hydrogen
• Jlab-ele006; https://education.jlab.org/itselemental/ele006.html
• Pubchem-6: https://pubchem.ncbi.nlm.nih.gov/element/6
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Pubchem-8: https://pubchem.ncbi.nlm.nih.gov/element/8