Solution Concentration Practice Problems Directions: Read the following questions carefully. Answer in the space provided. Remember units and significant
figures where appropriate. SHOW ALL WORK TO RECEIVE CREDIT. No work, no credit, no kidding!
1. What is the percent by mass of 2.8 g of benzoyl peroxide in a 28 g solution of acne medication?
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2. What is the percent by mass of 5.4 g of potassium nitrate in 260.9 of water?
3. You have 150. g of a bleach solution. The percent by mass of the solute, sodium hypochlorite (NaCl), is 3.62%.
How many grams of Nool are in the solution?
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4. In question 3 above, how many grams of solvent are in the solution?
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