One more question, I just noticed what i circled in green...is this correct? The lone pair on the nitrogen is throwing me off, is this another typo? Thank you in advance!

Natalie - Subject Expert Thank you! 

Is what I circled in red a double bond or a negative charge? Is what I circled in blue a hydronium ion or is the positive sign attached to the NHNH2?? I am very confused???

This is how my professor shows the mechanism for hydrazone and I am confused. In Melissa's video she takes electons from the nitrogen in hydrazine but my professor takes the electrons from the oxygen in water...can someone PLEASE explain the mechanism I provided?! Professors way of drawing mechanism confuses me

22:44 Melissa says the carbocation on the first structure has a p orbital therefore the structure is fully conjugated, yet when considering Huckle's rule the carbocation does not have pi electrons. This confuses me, can someone please elaborate...thank you. It was to my understanding that pi electrons are p orbitals, is this not the case? I am confused...

For 4-ethyl-2methyl-1-propylcyclohexane would 1-ethyl-3-methyl-4-propylcyclohexane also be acceptable? 

My professor told us the order to remember is Resonance > atomic radius > electronegativity > inductive effect > formal charge but in this video you have a different order? I am wondering which is best to follow?

Natalie - Subject Expert so you're saying we prioritize minimizing the numbering first? even if that means not going in alphabetical order? 

do para, meta, ortho only apply when there is something like isoproply, tert-butyl present? 

For the last example would 3-butyl-5-hydroxy-1-cyclohexanone also be acceptable?