1. If 19.0 grams of NaCl is dissolved in 150 grams of water calculate the mass percent of sodium chloride in solution.
2. Determine the numbers of grams of NaCl are in a 10% solution containing 125g water.
3. Calculate the mass of water requires when a 7.50% KCl solution is prepared by dissolving the enough of the salt to give 100g of solution