The molecular weight of Ammonium sulfate [(NH₄)₂SO₄] is 132.14108.

Ammonium sulfate [(NH₄)₂SO₄] is an inorganic compound of four elements: Nitrogen, Sulfur, Hydrogen, and Oxygen. The molecular weight of Ammonium sulfate is 132.14108 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Nitrogen, Sulfur, Hydrogen,  and Oxygen.

CALCULATION PROCEDURE: Ammonium sulfate [(NH₄)₂SO₄] Molecular Weight Calculation

Step 1: Find the chemical formula and determine constituent atoms and their number in an Ammonium sulfate molecule.
You will know different atoms and their number in an Ammonium sulfate molecule from the chemical formula. The chemical formula of Ammonium sulfate is [(NH₄)₂SO₄]. From the chemical formula of Ammonium sulfate, you can find that one molecule of Ammonium sulfate has two Nitrogen (N) atoms, eight Hydrogen (H) atoms, 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 Nitrogen (N): 14.00674 (Ref: Jlab-ele007)
Atomic weight of Hydrogen (H): 1.008 (Ref: Lanl-1)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)
Atomic weight of Sulfur (S): 32.066 (Ref: Jlab-ele016)

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

Number of Nitrogen atoms in Ammonium sulfate: 2
Atomic weight of Nitrogen (N): 14.00674
Total weight of Nitrogen atoms in Ammonium sulfate: 14.00674 x 2 = 28.01348

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

Number of Sulfur atoms in Ammonium sulfate: 1
Atomic weight of Sulfur (S): 32.066
Total weight of Sulfur atoms in Ammonium sulfate: 32.066 x 1 = 32.066

Number of Oxygen atoms in Ammonium sulfate: 4
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Ammonium sulfate: 15.9994 x 4 = 63.9976

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

Molecular weight of Ammonium sulfate: 28.01348 (Nitrogen) + 8.064 (Hydrogen) + 32.066 (Sulfur) + 63.9976 (Oxygen)  = 132.14108

So the molecular weight of Ammonium sulfate is 132.14108.

Ammonium sulfate [(NH₄)₂SO₄] Molecular Weight Calculation

REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml 
• Jlab-ele016: https://education.jlab.org/itselemental/ele016.html
  
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Jlab-ele007: https://education.jlab.org/itselemental/ele007.html

See also:

• Apiose (C5H10O5) Molecular Weight Calculation