30. What is the volume percent of a solution prepared by dissolving 20
30. What is the volume percent of a solution prepared by dissolving 20 g of KOH in enough
water to make a final volume of 120 mL? Show your work. How many mL of a 5% solution can be made from the solution in part a? Show your work
31. (a) Given that the molar mass of H2SO4
is 98.1 grams, determine the number of grams of H2SO4
needed to prepare 0.2 L of a 0.5 M H2SO4 solution. Show your work. (b) What volume, in Liters, of a 0.5 M H2SO4
solution can be prepared by diluting 100 mL of a 4 M H2SO4
s
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