Question

What is the best name for the molecule below?

The molecule is made of five methylene groups (CH2) with two methyl groups (CH3) at each end of the carbon chain.

1-ethyl, 4-methyl butane
heptane
6-methyl, pentane
1-propyle, 6 methyl, propane

Answer 1

Methane Ethane Propane Butane Pentane Hexane Heptane Octane

Answer 2

Thank you so much! But I'm really bad with chemistry so which one is that?

Answer 3

@maryroll3

Answer 4

Please help!!!

Answer 5

Two methyl groups at EACH end, or a methyl group at each of the two ends?

Answer 6

im pretty sure its heptane

Answer 7

i dont see how it would be any of the other options considering the description describes an alkane

Answer 8

\(\color{blue}{\mathsf{CH_3}} \color{red}{\mathsf{- CH_2 - CH_2 - CH_2 - CH_2 - CH_2-}}\color{blue}{\mathsf{CH_3}}\)
This is how it will look like. Note the linear chain, combining C, H and single bonds. This is clear that it is an Alkane.

Moreover, there are 7 C atoms, so, it is heptane. (Hept stands for 7 Carbon atoms here)

Answer 9

1,5 dimethyl pentane as originally posited.

Answer 10

well I agree with you @NoelGreco but that isnt an answer choice

Answer 11

I didn't get the point that why would it be 1,5 dimethyl pentane... !

Answer 12

Well after reviewing it again it wouldnt be 1,5 dimethyl pentane it would be heptane but if it were carbon carbon double bonds that maybe 1,5 dimethyl pentene

Answer 13

:)

Answer 14

conformly it is heptane(no doubt in tht)

Answer 15

by the longest chain rule we can say it as heptane