The molecular weight of Leucine [C₆H₁₃NO₂] is 131.17374.

Leucine (C₆H₁₃NO₂) is an organic compound of four elements: Carbon, Hydrogen, Nitrogen, and Oxygen. The molecular weight of Leucine is 131.17374 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

CALCULATION PROCEDURE: Leucine  [C₆H₁₃NO₂] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in an Leucine molecule.
From the chemical formula, you will know different atoms and their number in an Leucine molecule. The chemical formula of Leucine is C₆H₁₃NO₂. From the chemical formula of Leucine, you can find that one molecule of Leucine consists of six Carbon (C) atoms, thirteen Hydrogen (H) atoms, one Nitrogen (N) atom, and two 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 Leucine molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Leucine: 6
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in Leucine: 12.0107 x 6 = 72.0642

Number of Hydrogen atoms in Leucine: 13
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Leucine: 1.008 x 13 = 13.104

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

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

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

Molecular weight of Leucine: 72.0642 (Carbon) + 13.104 (Hydrogen) + 14.00674 (Nitrogen) + 31.9988 (Oxygen) = 131.17374

So the molecular weight of Leucine is 131.17374.

Leucine [C₆H₁₃NO₂] 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
•  Jlab-ele015: https://education.jlab.org/itselemental/ele016.html
  

See also:

• Hydrogen chloride molecular weight calculation