posted by Udith .
You are given 350 mL a stock solution of 8.32E-03 M benzoic acid, MW = 122.125 g/mol.
If the actual density should be 1.05 g/mL. What is your percent error?
an approximate error can be by assuming there is 350grams of water and .350*8.32E-3*122.125, then dividing it by .350L. That will give an approximate density. I am not suggesting this is a good way here, but the data is insufficient.