Question: Set up an appropriate equation and solve. Data are accurate to two significant digits unless greater accuracy is given. After installing a pollution control device,

Set up an appropriate equation and solve. Data are accurate to two significant digits unless greater accuracy is given.

After installing a pollution control device, a car’s exhaust contained the same amount of pollutant after 5.0h as it had in 3.0h. Before the installation the exhaust contained 150ppm/h (parts per million per hour) of the pollutant. By how much did the device reduce the emission?

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