Question

A hydrocarbon contains 90% by mass of carbon. What is its empirical formula?

Answer 1

Answer:

hey mate here is your answer...

Explanation:

Given C 90%, H10%.

So Moles of element C = 90/12 =7.5

So Moles of element H = 10/1 =10

Simplest molar ration of carbon= 7.5/7.5=1

Simplest molar ration of H= 10/7.5=1.33

whole no ratio element C= 1*3=3

whole no ratio element H= 1.33*3=4

so its C3H4