Question

Draw all possible structural formulae of compounds from their molecular formula given below.
a. C₃H₈
b. C₄H₁₀
c. C₃H₄

Answer 1

For all the possibles way - Refers to the attachment .

The possible structure of the given formula propane , butane and propyne compounds are :- 
The possible structure comes only when as the chain length grows , the number of possible structure multiply .

Formula :-

Propane
C₃H₈   ---→  H₃C - CH₂ - CH₃

Butane
C₄H₁₀  ---→H₃C - CH₂ - CH₂ - CH₃

Propyne
C₃H₄   ----→ HC ≡ C - CH₃



For all the possibles way - Refers to the attachment . 


Hope it Helps :-)

Answer 2

Propane

C₃H₈   ---→  H₃C - CH₂ - CH₃

Butane

C₄H₁₀  ---→H₃C - CH₂ - CH₂ - CH₃

Propyne

C₃H₄   ----→ HC ≡ C - CH₃