Two questions: Calculate the number of moles of NaOH in 300ml of .1 M NaOH.

If you have 0.3L, and there are 0.1moles per L, how many moles? n=cv

2nd question: Calculate the volume of 3 M NaOH required to prepare 300ml of .1 M NaOH

How many moles in the 300mL soln (same as first question). This amount will also be present in 3M soln. c

_{1}v

_{1} = c

_{2}v

_{2}: solve for v

_{2}.

The number of moles in NaOH is: Na=23+O=16+H=1 which totals 40 moles

That is all I know how to do...

You have calculated the molar mass of NaOH here, which is not nessesary to solve problem.