What is the molecular mass of glucose molecule (C6H12O6)?


The total sum of the masses of the atoms or elements present in the molecule is termed as molecular mass.

Calculation of Molar mass of a compound

We can find the molecular mass of the molecule by following the given substance:

  • Identify the formula of the compound or molecule.
  • Using the formula to determine the number of atoms present in each element of the compound or molecule.
  • Multiply the atomic weight of each element with the number of atoms of that particular element.
  • Similarly, do it for all the elements in the molecule or compound.
  • Add up all the values obtained in the above step.
  • Then add the unit as grams/mole you will get the molecular mass of the substance.

Molecular mass of glucose (C6H12O6)

Let us look for the atomic masses of carbon (C), hydrogen (H) and oxygen (O).

C = 12

H = 1

O = 16

∴ The molar mass of the glucose is

⇒ 12 x 6 + 1 x 12 + 16 x 6

⇒ 72 + 12 + 96

= 180

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