Draw the condensed structural formula for ethylbenzene, 1,3 dichlorobenzene,1,2 and 4-trimethylbenzene ? Any help would be appreciated, thank you

I also was wondering if anyone could let me know if I am going in the correct direction with this question>
Acetylene gas reacts with oxygen and burns at 3300 C in an acetylene torch. Write the balanced equation for the complete combustion of acetylene.

2C2H2 +5 O2 = 4 CO2 +2 H2O (think this is correct) ?

We can't draw structures on the board. sorry. The C2H2 equations looks ok to me.

Ok, it looks good then? Thank you for looking it over.

Do you know where I would be able to receive online assistance with drawing structures? Thank you.

No. The best I have been able to do is to type in names to google and hope the links there will show the structure.

By the way, there must be an easier way to identify functional groups. Do you have a table of functional groups. They are in almost in organic chemistry book and there must be dozens of sites on the Internet. If you can't find one I shall be happy to find one for you.

I do not have any table of functional groups. I am out of the city w/o a textbook visiting an ill parent.

I will look online.

I think I have it though regarding functional group. Any OH-C bond is an alcohol. O would be ether due to C-0-C bond. C-SH bond would be thiol.

But I still really need assistance with drawing structures.So no online help for that it looks like...

Yes, but remember OH on alkane is an alcohol; an OH on a benzene ring(or rings) is a phenol.

Sure! I can help you with both questions.

For the first one, to draw the condensed structural formula for ethylbenzene, 1,3-dichlorobenzene, 1,2-trimethylbenzene, and 4-trimethylbenzene, you need to consider the structure of benzene and the substituents attached to it.

1. Ethylbenzene: In this compound, there's an ethyl group (-CH2CH3) attached to the benzene ring. The condensed structural formula would be:

CH3-CH2-C6H5

2. 1,3-dichlorobenzene: In this compound, there are two chlorine atoms attached to the benzene ring, specifically in the 1 and 3 positions. The condensed structural formula would be:

Cl-C6H4-Cl

3. 1,2-trimethylbenzene: In this compound, there are two methyl groups (-CH3) attached to the benzene ring, specifically in the 1 and 2 positions. The condensed structural formula would be:

CH3-C6H4-CH3

4. 4-trimethylbenzene: In this compound, there's a methyl group (-CH3) attached to the benzene ring in the 4 position. The condensed structural formula would be:

CH3-C6H4-CH3

Now, for your second question, you are indeed going in the correct direction with the balanced equation for the complete combustion of acetylene gas.

The balanced equation is:
2 C2H2 + 5 O2 → 4 CO2 + 2 H2O

In this equation, two molecules of acetylene gas (C2H2) react with five molecules of oxygen (O2) to produce four molecules of carbon dioxide (CO2) and two molecules of water (H2O). This equation represents the complete combustion of acetylene.

I hope this helps! Let me know if you have any further questions.