Answer to Question #79164 in General Chemistry for Ethan

Question

1. An experiment requires a solution that is 80% methyl alcohol by mass. What mass of methyl alcohol should be added to 20 g of water to make this solution?

2. Calculate the mole fraction of NaCl in a solution containing 12.6 g NaCl and 21.3 g KCl in 122 g of water.

3.A solution of phosphoric acid was made by dissolving 10.0 g of H3PO4 in 100.0 mL of water. The resulting volume was 104 mL. Calculate the molarity of the solution. Assume water has a density of 1.00 g/cm3.