The molecular weight of Xylose (C_{5}H_{10}O_{5}) 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: Xylose (C**_{5}H_{10}O_{5}) Molecular Weight Calculation

_{5}H

_{10}O

_{5}) Molecular Weight Calculation

**Step 1: Find out the chemical formula and determine constituent atoms and their number in a Xylose molecule.**From the chemical formula, you will know different atoms and their number in a Xylose molecule. Chemical formula of Xylose is C

_{5}H

_{10}O

_{5}. From the chemical formula of Xylose, you can find that one molecule of Xylose 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 Xylose molecule by multiplying its atomic weight by its number.**

Number of Carbon atoms in Xylose: 5

Atomic weight of Carbon: 12.0107

Total weight of Carbon atoms in Xylose: 12.0107 x 5 = 60.0535

Number of Hydrogen atoms in Xylose: 10

Atomic weight of Hydrogen: 1.008

Total weight of Hydrogen atoms in Xylose: 1.008 x 10 = 10.080

Number of Oxygen atoms in Xylose: 5

Atomic weight of Oxygen: 15.9994

Total weight of Oxygen atoms in Xylose: 15.9994 x 5 = 79.997

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

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

So the molecular weight of Xylose is 150.1305.

Xylose (C_{5}H_{10}O_{5}) Molecular Weight Calculation

Molecular weight of Xylose | |||

Constituent atoms | Number of each atom | Atomic weight | Total weight |

Carbon (C) | 5 | 12.0107 | 60.0535 |

Hydrogen (H) | 10 | 1.008 | 10.080 |

Oxygen (O) | 5 | 15.9994 | 79.997 |

Molecular weight of Xylose: | 150.1305 |

## 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