# Arabinose (C5H10O5) Molecular Weight Calculation

The molecular weight of Arabinose (C5H10O5) is 150.1305.

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: Arabinose (C5H10O5) Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Arabinose molecule.
From the chemical formula, you will know different atoms and their number in a Arabinose molecule. Chemical formula of Arabinose is C5H10O5. From the chemical formula of Arabinose, you can find that one molecule of Arabinose has five Carbon (C) atoms, ten Hydrogen (H) atoms and five Oxygen (O) atoms.

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 Arabinose molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Arabinose: 5
Atomic weight of Carbon: 12.0107
Total weight of Carbon atoms in Arabinose: 12.0107 x 5 = 60.0535

Number of Hydrogen atoms in Arabinose: 10
Atomic weight of Hydrogen: 1.008
Total weight of Hydrogen atoms in Arabinose: 1.008 x 10 = 10.080

Number of Oxygen atoms in Arabinose: 5
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Arabinose: 15.9994 x 5 = 79.997

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

Molecular weight of Arabinose: 60.0535 (Carbon) + 10.080 (Hydrogen) + 79.997 (Oxygen) = 150.1305

So the molecular weight of Arabinose is 150.1305.

Arabinose (C5H10O5) 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