Question

a compound of carbon and hydrogen contains 85.7% of carbon and 14.3% of hydrogen by mass.Ar values:C=12,H=1 mole% of C=................,mol mole% of H=...............mol

Answer 1

Explanation:

mass of carbon+mass of hydrogen = total molecular mass

mass of carbon is 12

mass of hydrogen is 1

mole% of c= 12/13*100 = 92.31%

mole% of h= 1/13*100 = 7.69%