Question

listen
the following are molecular formulas. which formula represents an alkene?
propene ($c_3h_6$)
decane ($c_{10}h_{22}$)
ethane ($c_2h_6$)
butane ($c_4h_{10}$)
question 17 (5 points)

Explanation:

Alkenes follow the general molecular formula $C_nH_{2n}$, where $n$ is the number of carbon atoms. Alkanes follow $C_nH_{2n+2}$.

1. For Propene ($C_3H_6$): $n=3$, $2n=6$, matching the formula.
2. For Decane ($C_{10}H_{22}$): $n=10$, $2n+2=22$, so it is an alkane.
3. For Ethane ($C_2H_6$): $n=2$, $2n+2=6$, so it is an alkane.
4. For Butane ($C_4H_{10}$): $n=4$, $2n+2=10$, so it is an alkane.

Answer:

Propene ($C_3H_6$)