Question

The molecular formula of glucose is C6H12O6. Calculate its molecular mass. (Atomic masses C = 12 u ; H = 1 u ; O = 16 u)

Answer 1

Answer:

C6H12O6=

12×6+1×12+16×6=

72+12+96=

180u

Answer 2

Molecular mass of Glucose is 180 u

Explanation:

• Molecular mass : The sum of the atomic masses of all the atoms in a molecule of a substance is called the molecular mass of the molecule.

Generally we use relative atomic masses of atoms for calculating the molecular mass of 1 mole of any molecular or ionic substances.

• Molecular formula of glucose is  

Atomic mass of H = 1

Atomic mass pf C = 12

Atomic mass of O = 16

Molecular mass of $C_6H_1_2O_6$ = 12(Atomic mass of Hydrogen) + 6(Atomic mass of carbon) + 6(Atomic mass of oxygen)

= $12 \times 1 + 6 \times 12 + 6 \times 16$

= 12 + 72 + 96 = 180 u.