My lab partner and I need HELP with our Pre - lab questions! They're due in 2 days but we need HELP ASAP!?

Help please

In order to make a solution that is 0.30 M in CuSO4, what volume of the above solution should be diluted to 5.00 mL with water?

A 0.10 M solution compound "B" is measured in a 1.00 cm path length curvette at a wavelength of 500 nm. The percentage of light transmitted through the cell is 38%. 

a. What is the absorbance of this sample (A) at 500 nm?

b. Assuming Beer's Law holds, what is the volume of (the "e" symbol) for compound B at 500 nm?

c. A sample of compound B having an unknown concentration is measured to have an absorbance of 0.90 in a 1.00 cm length cell at 500 nm. What is the concentration of B in this sample, assuming Beer's Law holds?