Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
An Alka-Seltzer tablet contains 324 mg aspirin, C9H8O4; 1904 mg NaHCO3; and 1000 mg citric acid, C6H8O7. (The last two compounds react with each other to provide the “fizz,” bubbles of CO2, when the tablet is put into water.)
(a) Calculate the number of moles of each substance in the tablet.
(b) If you take one tablet, how many molecules of aspirin are you consuming?
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