Chemistry
9th Edition
ISBN: 9781133611097
Author: Steven S. Zumdahl
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 46E
Apothecaries (druggists) use the following set of measures in the English system:
20 grains ap = 1 scruple (exact)
3 scruples = 1 dram ap (exact)
8 dram ap = 1 oz ap (exact)
1 dram ap = 3.888 g
- a. Is an apothecary grain the same as a troy grain? (See Exercise 49.)
- b. 1 oz ap = ____________ oz troy.
- c. An aspirin tablet contains 5.00 × 102 mg of active ingredient. What mass in grains ap of active ingredient does it contain? What mass in scruples?
- d. What is the mass of 1 scruple in grams?
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"Water gas" is an industrial fuel composed of a mixture of carbon monoxide and hydrogen gases. When this
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4. Calculate AG for the following reaction at 25°C. Will the reaction occur (be spontaneous)? How do you
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NH3(g) + HCl(g) → NH4Cl(s)
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The equilibrium constant for this reaction is 0.20.
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Based on the above, the equilibrium constant for the following reaction is 5.
4NO2(g) ⇔ 2N2O4(g)
Chapter 1 Solutions
Chemistry
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