The molecular weight of Lysine [C₆H₁₄N₂O₂] is 146.18848.

Lysine (C₆H₁₄N₂O₂) is an organic compound of four elements: Carbon, Hydrogen, Nitrogen, and Oxygen. The molecular weight of Lysine is 146.18848 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

CALCULATION PROCEDURE: Lysine  [C₆H₁₄N₂O₂] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Lysine molecule.
From the chemical formula, you will know different atoms and their number in a Lysine molecule. The chemical formula of Lysine is C₆H₁₄N₂O₂. From the chemical formula of Lysine, you can find that one molecule of Lysine consists of six Carbon (C) atoms, fourteen Hydrogen (H) atoms, two Nitrogen (N) atoms, 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 a Lysine molecule by multiplying its atomic weight by its number.

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

Number of Hydrogen atoms in Lysine: 14
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Lysine: 1.008 x 14 = 14.112

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

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

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

Molecular weight of Lysine: 72.0642 (Carbon) + 14.112 (Hydrogen) + 28.01348 (Nitrogen) + 31.9988 (Oxygen) = 146.18848

So the molecular weight of Lysine is 146.18848.

Lysine [C₆H₁₄N₂O₂] 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