1) You need to mix 35L of artificial seawater. You're handed a bag of crystallized salt mix and you're told seawater typically has a salt concentration of 35 mg/L. How much salt mix would you need? How would you determine the amount of distilled water you needed to dilute the salt mix in?

2) You are given a 10 ml blood sample. After doing a series of dilutions you have made an over all dilution of 1/200th. In a 0.1 ml sample from this final dilution, you are able to count 5 white blood cells. How many white blood cells were in the original sample (express this quantity in cells/ml)?