What is the molecular weight of a substance, each molecule of which contains `9` carbon atoms, `13` hydrogen atoms and `2.33 xx 10^(-23) g` of other component ?

Explanation

Mass of 9 atoms of carbon `= 9 xx 23 u = 108 u`
Mass of 13 atoms of hydrogen `= 13 xx 1 u = 13 u`
Mass of `2.33 xx 10^(-23)` g of other component `= (1u) xx ((2.33xx10^(-23)g))/((1.66xx10^(-24)g))=14.04u`
Molecular mass of the substance `= (108+13+14.04)u=135.04u`.