Question

What is the molar mass of a compound represented below?

Options

• 108 g mol^-1

• 120 g mol^-1

• 128 g mol^-1

• 126 g mol^-1

Answer 1

128 g mol^-1 

Explanation:

M.F. = C₉H₂₀

No. of 'C' atoms = 9

No. of 'H' atoms = 20

Molecular mass = (9 × 12) + (1 × 20) = 128 g mol^-1