Unformatted text preview: a) 72°F to °C b) 25°C to K c) 3.58 mg to g d) 0.345 L to ml e) 125 cm 3 to in 3 f) 46.4 m 3 to liters 7. Describe what is meant by the terms “exact number” and “derived unit”. Provide an example of each. 8. If a runner finishes a 5.00 km cross-country race in 22.0 minutes, a) what is the runner’s average pace, in min/mi? b) what is the runner’s average speed in m/s and in mi/hr? 9. The density of mercury is 13.53 g/mL. What is the volume of 6.86 g of mercury? 10. A sample of metal weighing 8.46 g is known to be either Ni, W, Pd, or Os. Metal Density (g/cm 3 ) The sample is placed into a graduated cylinder containing 25.00 ml of water, Ni 8.90 after which the total volume of water plus metal is observed to be 25.44 ml. W 19.35 Given the density data, identify the metal. Pd 12.02 Os 22.48 11. If an automobile can travel 22 mi on one gallon of gasoline when traveling at a velocity of 65 mi/hr, how many grams of gas are consumed per hour ? Assume the density of gasoline is 0.80 g/ml. Chap. R & 1, Homework Problems: R.24, R.26, R.30, R.32, R. 46, R.54, R.72; 1.32, 1.48, 1.54...
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- Fall '08
- Chemistry, km cross-country race