The molecular weight of Ethyl methyl ether (CH₃OCH₂CH₃) is 60.0955.

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: Ethyl methyl ether (CH₃OCH₂CH₃) Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Ethyl methyl ether molecule.
From the chemical formula, you will know different atoms and their number in a Ethyl methyl ether molecule. Chemical formula of Ethyl methyl ether is C₃H₈O. From the chemical formula of Ethyl methyl ether, you can find that one molecule of Ethyl methyl ether has three Carbon (C) atoms, eight Hydrogen (H) atoms and one Oxygen (O) atom.

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 Ethyl methyl ether molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Ethyl methyl ether: 3
Atomic weight of Carbon: 12.0107
Total weight of Carbon atoms in Ethyl methyl ether: 12.0107 x 3 = 36.0321

Number of Hydrogen atoms in Ethyl methyl ether: 8
Atomic weight of Hydrogen: 1.008
Total weight of Hydrogen atoms in Ethyl methyl ether: 1.008 x 8 = 8.064

Number of Oxygen atoms in Ethyl methyl ether: 1
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Ethyl methyl ether: 15.9994 x 1 = 15.9994

Step 4: Calculate the molecular weight of Ethyl methyl ether by adding up the total weight of all atoms.

Molecular weight of Ethyl methyl ether: 36.0321 (Carbon) + 8.064 (Hydrogen) + 15.9994 (Oxygen) = 60.0955

So the molecular weight of Ethyl methyl ether is 60.0955.

Ethyl methyl ether (CH₃OCH₂CH₃) 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