Homework Solution

TQ 8-07

Given:

the emission standard for CO for automobiles

Find:

kg/yr of CO emitted by an automobile conforming to the emission standard exactly

Assume:

20,000 miles/yr driven

Data:

from table 8-6 of text, the CO emission standard is 3.4 g/mile

Solve:

mass rate = (3.4 g/mile)(20,000 miles/yr)/(1000 g/kg)

mass rate = 68 kg/yr