Question

If a hydrocarbon contains 16.67% of hydrogen by mass .which is the hydrocarbon

Answer 1

Answer:

Ok brother

Explanation:

The correct option is c

Answer 2

Answer:

Hydrocarbon 16.67, Carbon (100-16.67)

Explanation:

Treat the percentages as masses and divide each by their Ar (The Average Atomic mass)

So,

$\frac{16.67}{1}$  and $\frac{83.33}{12}$

which will be

16.67 and 6.94

Sice 6.94 is the smallest number, divide both numbers by 6.94

$\frac{16.67}{6.94}$ and $\frac{6.94}{6.94}$

which will be

2.40 and 1

which rounds off to 2 and 1

so the emperical formula is CH2

so the hydrocarbon is an alkene.