Write the structural formulas and names for all the butanes?

Answer 1

CH3CH2CH2CH3 n-Butane

(CH3)2CHCH3 Isobutane, 2-methylpropane

Answer 2

All butanes, by definition, have the molecular formula C4H10. So there's straight-chain butane and isobutane; that is, a propane chain with a CH3 attached to the central C atom in the chain.

Answer 3

As I form the answeres a million way, they print out yet another so i'm going to describe: In "a" the two methyl s (CH3) come off the suited and backside of the 2d carbon CH3 a. CH3 CH2 CH2 CH2 CH3 CH3 for "b" a propyl group (3 carbons) comes of the third carbon interior the chain CH2 CH3 CH3 b. CH3 CH2 CH CH2 CH2 CH3 for "c" a 2 carbon ethyl comes off the third carbon interior the chain and a one carbon methyl comes off the 4th carbon interior the chain CH2 CH3 c. CH3 CH2 CH CH CH2 CH2 CH2 CH3 CH3 For "d" a a million carbon methyl comes off the third carbon interior the chain, off the suited and backside of the 4th carbon and rancid the 5th carbon CH3 CH3 CH3 d. CH3 CH2 CH CH CH CH2 CH3 CH3 CH3 CH3 CH3 CH2 = CH CH2 CH2 CH2 CH3 CH3 CH2 CH2 CH2 CH2 CH3 CH2 CH = CH CH2 CH2 CH3 CH2 CH3 CH2 = CH CH CH CH3 The final shape is an ethane (CH CH) with a phenyl related to the suited and backside of the two between the ethane carbons. The phenyl is a closed. 6-sided shape with a hoop interior the middle and an OH group coming off between the carbons, the final formula for phenyl is aryl-OH the place aryl represents and aryl group that's an fragrant carbon ring from which a million hydrogen atom has been bumped off. CH3