[humbargal]

I have 90 mL of 0.025 M iron (III) nitrate solution that will be added to 10 mL 0.0058 M stock salicylic acid. From this standard solution, 4 other solutions will be created. Can someone help me calculate the concentrations of the following. I don't understand and I need this for a lab. 

1. 10 mL of standard solution (Fe(NO3)3 & C7H6O3) + 0 mL of water
2. 7.5 mL of standard solution (Fe(NO3)3 & C7H6O3) + 2.5 mL of water
3. 5.0 mL of standard solution (Fe(NO3)3 & C7H6O3) + 5.0 mL of water
4. 3.5 mL of standard solution (Fe(NO3)3 & C7H6O3) + 7.5 mL of water

THANK YOU! 

[agrobert]

Show your work please.  People are willing to help when you follow forum rules.

[AWK]

This is a simple example of repeatedly use of formula c1V1 = c2V2
Just mix stock solution and calculate concentrations of both reagents in resulting solution, then dilute it.
I guess theat in:

4. 3.5 mL of standard solution (Fe(NO3)3 & C7H6O3)

should be 2.5 mL