The molecular weight of Aspartic acid [C₄H₇NO₄] is 133.10314.

Aspartic acid (C₄H₇NO₄) is an organic compound of four elements: Carbon, Hydrogen, Nitrogen, and Oxygen. The molecular weight of Aspartic acid is 133.10314 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

CALCULATION PROCEDURE: Aspartic acid  [C₄H₇NO₄] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in an Aspartic acid molecule.
From the chemical formula, you will know different atoms and their number in an Aspartic acid molecule. The chemical formula of Aspartic acid is C₄H₇NO₄. From the chemical formula of Aspartic acid, you can find that one molecule of Aspartic acid consists of four Carbon (C) atoms, seven Hydrogen (H) atoms, one Nitrogen (N) atom, and four Oxygen atoms.

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 Nitrogen (N): 14.00674 (Ref: Jlab-ele007)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)

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

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

Number of Hydrogen atoms in Aspartic acid: 7
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Aspartic acid: 1.008 x 7 = 7.056

Number of Nitrogen atoms in Aspartic acid: 1
Atomic weight of Nitrogen (N): 14.00674
Total weight of Nitrogen atoms in Aspartic acid: 14.00674 x 1 = 14.00674

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

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

Molecular weight of Aspartic acid: 48.0428 (Carbon) + 7.056 (Hydrogen) + 14.00674 (Nitrogen) + 63.9976 (Oxygen) = 133.10314

So the molecular weight of Aspartic acid is 133.10314.

Aspartic acid [C₄H₇NO₄] Molecular Weight Calculation

REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml 
• Jlab-ele006: https://education.jlab.org/itselemental/ele006.html 
• Jlab-ele007: https://education.jlab.org/itselemental/ele007.html
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
  

See also:

• Hydrogen chloride molecular weight calculation