Question

In 1993 the Minnesota Department of Health set a health risk limit for benzoic add in groundwater of 30.0 mg L. Suppose an analytical Chemist receives a sample of groundwater with a measured volume of 22.0 mL. Calculate the maximum mass in milligrams of benzoic acid which the chemist could measure in this sample and still certify that the groundwater from which it came met Minnesota Department of Health standards. Round your answer to 3 significant digits. @ x 5 ?

Answer 1

gisk limit concen. of C6H5COOH = 30 mg/l I volume of sample (~) = 22 mL = 0.022L mass = 30 mg y concen volume mass = 30 mg x 0.0 222 = 0. 66 mg o mass of C6H5 COOH = 0.66mg