4 15 points suppose an indoor tractor pull competition at the county f
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4. (15 points) Suppose an indoor "tractor pull" competition at the county fair resulted in aCO concentration of 450 ppmv. a) What percentage COHB would result for a spectator who
is exposed to one hour atthis level? b) How long would it take to reach 10 percent COHb, which is a level at which most people will experience dizziness and headache?