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.
The use of CFCs (chlorofluorocarbons) has been curtailed because there is strong evidence that they cause environmental damage. If a spray can contains 250 g of one of these compounds, CCl2F2, how many molecules of this CFC are you releasing to the air when you empty the can?
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