The molecular weight of Methyl propionate [CH₃CH₂CO₂CH₃] is 88.1056.

To calculate molecular weight of any compound, the first step is to know the constituent atoms and their number in that particular compound. Then calculate the total weight of each atom by multiplying its atomic weight by its number. The sum of total weight of all constituent atoms will be the molecular weight of the compound. Note that the value of atomic weight may differ slightly from different sources.

CALCULATION PROCEDURE: Methyl propionate [CH₃CH₂CO₂CH₃] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Methyl propionate molecule.
From the chemical formula, you will know different atoms and their number in a Methyl propionate molecule. Chemical formula of Methyl propionate is C₄H₈O₂. From the chemical formula of Methyl propionate, you can find that one molecule of Methyl propionate has four Carbon (C) atoms, eight Hydrogen (H) atoms and two Oxygen (O) atoms.

Step 2: Find out atomic weights of each atom (from 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 present in a Methyl propionate molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Methyl propionate: 4
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in Methyl propionate: 12.0107 x 4 = 48.0428

Number of Hydrogen atoms in Methyl propionate: 8
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Methyl propionate: 1.008 x 8 = 8.064

Number of Oxygen atoms in Methyl propionate: 2
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Methyl propionate: 15.9994 x 2 = 31.9988

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

Molecular weight of Methyl propionate: 48.0428 (Carbon) + 8.064 (Hydrogen) + 31.9988 (Oxygen) = 88.1056

So the molecular weight of Methyl propionate is 88.1056.

Methyl propionate [CH₃CH₂CO₂CH₃] 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

See also:

• Apiose (C5H10O5) Molecular Weight Calculation