Hmm with the time remaining, if your not burnt out like i am then review for 12hours a day. I just cant do that anymore, my brain is fried and it keeps wandering. To get 5 more questions my guess would be to get 2-3 more questions by reading some details in the passages you might have not seen the first time. For example, I got a question wrong the other day it was on a rate law problem, something with acetone and something else. Apparently right above the table it said one of the reactants was zero order. Yea, im the idiot who didnt see that. You can get a few points just be paying closer attention to details. Other then that you can probably earn yourself a 2-3 more points by just reviewing details. Like on the free standing questions, or questions that dont have to do with the passage. Incorporating outside details can always get you a few quick points.