Before beginning a long trip on a hot day, a driver inflates an automobile tire to a measure pressure of 2.00 at m at 300 K. At the end of the trip, the measure pressure has increased to 2.80 atm.
a) Assuming the volume has remained constant, what is the temperature of the air inside the tire?
b) What percentage of the original mass of air in the tire must be released so the pressure returns to its original value? Suppose the temperature remains at the value found in part (a) and the volume of the tire remains constant as air is released.