Upon running through calculations I have hit a wall. I should be able to simply do these dilutions, but I seem to have chemists block. The question is as follows:
You will be furnished with a 10 mL mixed stock solution containing each component at 0.10 mg/mL. The components are chlorpyrifos, ethyl parathion, and malathion. The final concentration of the solution is to be 0.5 ng/μL with a final volume of 10 mL.
Just need help getting started with it. I am not sure if I should treat it as one solution or calculate the number of moles of each component.