[pinky]

hello guys,I have organic exam in 1 hour and I am lost,I cant find a way to answer this....so can I get some help please!!
here's my questions:

Provide the order of SN1 reactivity (reaction in AgNO3/EtOH, 1 = fastest) that you determine 1-bromobutane, 2-chloro-2-methylpropane and bromobenzene. List observations to support each rank. Justify any differences between the expected and the actual results.
 
Provide the order of SN2 reactivity (reaction with NaI in acetone, 1 = fastest) that you determine1-bromobutane, 2-chloro-2-methylpropane and bromobenzene. List observations to support each rank. Justify any differences between the expected and the actual results.

Give and justify expected results for treating 3-bromocyclohexene with:

a. silver nitrate in ethanol?

b. sodium iodide in acetone?


please I would be soo great from you all please