We’re being asked to convert g/km into mg/mi.
To do so, we need the following conversion factors:
1 mi = 1.61 km
1 mg = 10-3 g
In the U.S., the emissions limit for carbon monoxide in motorcycle engine exhaust is 12.0 g of carbon monoxide per kilometer driven.
What is this limit expressed in mg per mile with the correct number of significant figures?
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