[mass]

Can anyone tell me the mr of this please or write me the formula, I am struggling with the way its drawn

[Borek]

Each line is a bond, there is a carbon atom at each place where the lines meet and there is no other atom present. All carbon atoms are tetravalent, so if there is no four bonds incoming, there is a hydrogen (not drawn, could be more than one) present.

Try now.

[mass]

Each line is a bond, there is a carbon atom at each place where the lines meet and there is no other atom present. All carbon atoms are tetravalent, so if there is no four bonds incoming, there is a hydrogen (not drawn, could be more than one) present.

Try now.

C6H5COHCH3NHCH3??

[Borek]

C6H5

OK

COH

This carbon is not tetravalent - count incoming bonds.

CH3

This is a side chain - it is connected to another carbon, which you have missed. Remember it will have to be tetravalent!

NHCH3??

OK