A sample of water contaminated with pesticide is extracted with methylene chloride for determination of the pesticide. In experiments with a standard solution, it is found that when a 100 mL water sample is extracted with 30 mL of methylene chloride, 75% of the pesticide is removed. What fraction of the pesticide would be removed if three extractions of 10 mL of methylene chloride each were done instead?

Determine the molar concentrations of each ion following the mixing of 500.0mL of 0.15 M NaCI (aq) and 300.0 mL of 0.20 M NaF (aq).

calculate the grams of sucrose that must be added to 415.9 grams of water to prepare a 16.01% by mass solution

When solid silver chloride is added to 100. mL of H2O, 1.9 x 10–4 grams dissolves. What is the Ksp for silver chloride?