Q84. How did they come with the answer?

Q95. How do you do this thing. I have totally had gone blank on this one. I mean, I did not know where to start.

Q98. Is this info we have to know which I don't or is it in the passage and I'm not able to decipher?

PVI. I got only Q100 correct and missed the rest. How do you solve these problems?

Q109. Is there a formula for Potential Engery and separation distance b/c if there is I don't know of any.

Q112. Did not follow there logic. How can they conclude that the length would decrease.

Q118. How can the structure of SO2 and NO2- be the same? I just dont' get this.

PIX. I just did not understand this passages and missed half the question.

Q129,130. Some please explain why and how they came up with these answers.

I know that I am asking a lot but you don't have to be very detail. Just a line or two would greatly help. Thankx...