/sci/ - Science & Math

Ive been given this problem to solve and have no idea where to even begin? i know you have to count the compounds running horizontally (i think) and thats where I look at this like wtf

find the longest chain (its 8 carbons)

- label everything coming off of it in alphabetical order ( you have only methyl groups coming off of it)

-assign them numbers based on the smallest number combination you can figure!

your choices are:

3,3,5-trimethyl octane

or

4,6,6-trimethyl octane

3,3,5 is the smallest POSSIBLE numbers (3 is the smallest number out of any of these number combinations.

3,3,5-trimethyl octane is your answer

>>6422845
i am in awe, how do you know that they are methyl groups?? thank you so much, I'm trying to study what you wrote

>>6422845
This kind of thing just makes me happy. Some anon takes time out of his day to help someone who needs it, even if it's below their level and they could easily make fun of them. +1 internet to you, good sir.

>>6422845
>trimethyl octane
wait whaaaat? I don't know what that is. Fuck me this class is too hard
And how do you know the choices?

>>6422845
also what are the 3,3,5 and 4,4,6 i am not grasping that?

>>6422858
Methyl has 1 carbon. It goes methyl, ethyl, propyl, butyl, for 1, 2, 3, and 4 carbons respectively.

>>6422860
this is not OP

>>6422860
Octane because the LONGEST possible chain has 8 carbons (oct=eight) trimethyl because there are three methyl groups (tri=three). 3,3,5 and 4,4,6 are the positions of the methyl groups (for example two methyls on the third and one on the fifth).

>>6422865
Yes I am.

>>6422862
i want to thank you so much, such a better teacher than what I was taught in class today. she is some chemistry teacher that teaches high school by day and when it comes to her 7pm class she refuses to answer any questions it sucks. thank you for all your help i wrote down all your stuff

How can you not know how to do this?

Seriously /sci/, just ignore these homework help posts.

Organic chemistry is stringent for a reason...it weeds out all of the fucking retarded premed kids that are biology majors because their helicopter parents told them they are smart.

>>6422873
>Organic chemistry is stringent for a reason...it weeds out all of the fucking retarded premed kids that are biology majors because their helicopter parents told them they are smart.

>>6422861
they are the carbon number that each branch (the methyl groups) are located on, counting from either end of the longest chain.

3,3,5 means the group is located on the third carbon twice and the fifth carbon once. 4,6,6 means the group is located on the fourth carbon once and the sixth carbon twice. Each of these makes sense, depending on which end of the longest chain you start counting from, so you pick the smallest one.

>>6422882
Okay thank you so much! I think I get it!

>>6422873
Nobody made you bump it. He was trying to get understanding, not necessarily help with his homework. Just because you know more than him at this point in time it doesn't mean that he is inferior. There was once a time when you didn't understand organic chem either.

>>642287 At least I am trying. I may not be a genius but at least I am attempting to try and make a decent future for myself. Better me trying to complete school than suck the money out of the US and receive welfare or work some minimum wage job for the rest of my existence. That or become a criminal. Ill bust my ass in school and do my best.

>>6422873

this isnt even organic chem

op has plenty of time to stringe over all the different mechanisms later on - but not today

>>6422891
Yes this is organic chem. Notice the carbon-hydrogen molecule.

>>6422882
the other guy is not OP either -__- thank you again. I really appreciate the help. Take care.

just remember, monkey eats peeled bananas please hand him one. that is the first 8 prefixes, you know methyl, ethyl, etc..

>>6422921
you're the man…..

just put that in the notebook. so grateful

3 di methyl 5 propyl octane

whatever.

No one actually cares about iupac names.
they aren't important.

what I just said is close enough that no chemistry student or chemist would be confused

>>6422845
I think it's funny how people on this board worship this anon like a god, when any sophomore chemistry student should know this stuff like his ABC's.

IUPAC was founded in 1919, btw. There's not really very many of such things as "new chemistry". This is all relatively old information that everybody already knows.

Just goes to show how few actual scientists browse this board.

>>6422974
I'm not worshipping him, I'm grateful that someone took time out of their day to explain something to me. If you don't understand that well I feel sorry for you. He is the reason I can now complete my homework and move forward with learning.

>>6422974
Nobody said it was impressive he knew it. They said it was admirable that he took his time to explain a basic concept to someone in need instead of ridiculing them.

>>6422964
>iupac names aren't important
i take it you mean getting them 100 percent right isn't important, not that one should memorize every common name for compounds

>>6422974
>I think it's funny how people on this board worship this anon like a god, when any sophomore chemistry student should know this stuff like his ABC's.

Seriously, I'm an EE and even I know this shit 5 years since my last chem class

>>6423072

And yet you didn't decide to help OP out.

Great for you.

>>6422964
>what I just said is close enough that no chemistry student or chemist would be confused
Except you added two carbon atoms that aren't there.