cứu giúp em với !!!!!

Đáp án `+` Giải thích các bước giải:

`-` $\rm C_3H_6: CH_2=CH-CH_3:propen$
`-` $\rm C_4H_{10}:$
$\rm (1)CH_3-CH_2-CH_2-CH_3: n-butan$

$\rm (2)CH_3-CH(CH_3)-CH_3: 2-metylpropan$
`-` $\rm C_3H_8: CH_3-CH_2-CH_3:propan$
`-` $\rm C_4H_8:$
$\rm (1)CH_2=CH-CH_2-CH_3:but-1-en$
$\rm (2)CH_3-CH=CH-CH_3:but-2-en$
$\rm (3)CH_2=C(CH_3)-CH_3:2-metylprop-1-en$
`-` $\rm C_4H_6:$
$\rm (1)CH \equiv C - CH_2 -CH_3: but-1-in$
$\rm (2)CH_3 - C \equiv C - CH_3: but-2-in$
`-` $\rm C_3H_4: CH \equiv C - CH_3: propin$