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Unformatted text preview: 4. If a 3.0 g water sample has 12 mg of lead present, what is the concentration of lead in ppm? 5. What is the molarity of a 450 mL solution that contains 200 grams of iron (II) chloride? 6. How many liters of 4.0 M solution can be made using 100.0 grams of lithium bromide? 7. You are making 6.7 L of 4.5 M ammonium nitrate. How many grams of ammonium nitrate do you need for this solution? 8. If 112 g of sodium acetate are dissolved in enough water to make 1.50 L of solutionâ€¦ a. What is the molarity this solution? b. What is the percent by mass of sodium acetate in this solution? Assume 1.5 L of water was used to make the solution. c. What is the mole fraction of water in this solution? Challenge Question! (5 points) A solution of ethanol (C 2 H 5 OH) in water is prepared by dissolving 75.0 mL of ethanol (density = 0.79 g/mL) in enough water to make 250.0 mL of solution. What is the molarity of ethanol in this solution?...
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This note was uploaded on 01/01/2012 for the course CHEM 101 taught by Professor Donahue during the Spring '11 term at Long Island U..
 Spring '11
 DONAHUE

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