Weegy: B User: A catalytic converter in a car uses a metal catalyst to change carbon monoxide and nitric oxide into less harmful compounds. The catalytic converters last a long time because
A. the catalyst is not changed by the reactions.
B. there is a lot of catalyst present in the converter.
C. the catalyst is easily replaced during regular maintenance.
D. there are very few molecules of carbon monoxide and nitric oxide produced. Weegy: ... (More)