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.
How many moles are present in 0.250 g of each of these compounds?
(a) C7H5NO3S, saccharin, an artificial sweetener
(b) C13H20N2O2, procaine, a painkiller used by dentists
(c) C20H14O4, phenolphthalein, a dye
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