Ch.1 - Chemical Tools: Experimentation & Measurement
Chapter 1, Problem 104a
Which is larger in each pair, and by approximately how much? (a) A liter or a quart
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Textbook Question
Concentrations of substances dissolved in solution are often expressed as mass per unit volume. For example, normal human blood has a cholesterol concentration of about 200 mg/100 mL. Express this concentration in the following units. (e) How much total blood cholesterol in grams does a per-son have if the normal blood volume in the body is 5 L?
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Textbook Question
Administration of digitalis, a drug used to control atrial fibrilla-tion in heart patients, must be carefully controlled because even a modest overdose can be fatal. To take differences between patients into account, drug dosages are prescribed in terms of mg/kg body weight. Thus, a child and an adult differ greatly in weight, but both receive the same dosage per kilogram of body weight. At a dosage of 20 mg/kg body weight, how many mil-ligrams of digitalis should a 160 lb patient receive?
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Textbook Question
Among many alternative units that might be considered as a measure of time is the shake rather than the second. Based on the expression 'faster than a shake of a lamb's tail,' we'll define 1 shake as equal to 2.5 * 10-4 s. If a car is traveling at 55 mi/h, what is its speed in cm/shake
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Textbook Question
Which is larger in each pair, and by approximately how much? (b) A mile or a kilometer
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Textbook Question
Which is larger in each pair, and by approximately how much? (c) A gram or an ounce
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Textbook Question
Which is larger in each pair, and by approximately how much? (d) A centimeter or an inch
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