Question about SN1 and SN2 mechanism

I need help writing the balanced equations for the attached problems and determining which reactions proceed by an SN1 mechanism and SN2 mechanism.

---
1. Write the balanced equations for the following:
a. 2-bromobutane + NaI 
b. 2-bromobutante + AgNO3 + EtOH 
c. 2-bromo-2-methylpropane + NaI 
d. 2-bromo-2-methylpropane + AgNO3 + EtOH 
e. 1-bromobutane + NaI 
f. 1-bromobutane + AgNO3 + EtOH 
g. bromocyclohexane + NaI 
h. 1-bromoadamantane + NaI 
i. 1-bromoadamantane + AgNO3 + EtOH 

2. Which reactions proceed by an SN1 mechanism? By an SN2 mechanism?

Attachments