9 A pure hydrocarbon is used in bottled gas for cooking and heating.
When 10 cm³ of the hydrocarbon is burned in 70 cm³ of oxygen (an excess), the final gaseous
mixture contains 30 cm³ of carbon dioxide and 20 cm³ of unreacted oxygen. All gaseous volumes
were measured under identical conditions.
n=
What is the formula of the hydrocarbon?
A C₂H6
B C3H6
C C3H8
D
C4H10