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Unformatted text preview: HOM E WO R K CHA P T E R 1 K E Y 34. a. 6.022 x 10 23 x 1.05 x 10 2 = b. c. 1.285 x 10-2 + 1.24 x 10-3 + 1.879 x 10-1 d. 1.285 x 10-2 1.24 x 10-3 e. f. g. 40. Although the preferred SI unit of area is the square meter, land is often measured in the metric system as hectares (ha). One hectare is equal to 10,000 m 2 . In the English system, land is often measured in acres (1 acre = 160 rod 2 ). Use the exact conversions and those given in Exercise 39 to calculate the following. a. 1 ha = ________km 2 b. The area of a 5.5-acre plot of land in hectares, square meters, and square kilometers. c. A lot with dimensions 120 ft by 75 ft is to be sold for $6500. What is the price per acre? What is the price per hectare? 48. A childrens pain relief elixir contains 80. mg of acetaminophen per 0.50 teaspoon. The dosage recommended for a child who weighs between 24 and 35 lb is 1.5 teaspoons. What is the range of acetaminophen dosages, expressed in mg acetaminophen/kg body weight, for children who weigh between 24 and 35 lb. acetaminophen/kg body weight, for children who weigh between 24 and 35 lb....
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- Summer '04