Before beginning a long trip on a hot day, a driver inflates anautomobile tire t
ID: 1679791 • Letter: B
Question
Before beginning a long trip on a hot day, a driver inflates anautomobile tire to a gauge pressure of 2.00 atm at 300 K. At the end of the trip,the gauge pressure has increased to 2.80 atm. (a) Assuming the volume has remained constant, what is thetemperature of the air inside the tire?K
(b) What percentage of the original mass of air in the tire shouldbe released so the pressure returns to its original value? Assumethe temperature remains at the value found in part (a) and thevolume of the tire remains constant as air is released.
% (a) Assuming the volume has remained constant, what is thetemperature of the air inside the tire?
K
(b) What percentage of the original mass of air in the tire shouldbe released so the pressure returns to its original value? Assumethe temperature remains at the value found in part (a) and thevolume of the tire remains constant as air is released.
%
Explanation / Answer
a) here in the first case we have:- volume remains constant, so we have P1/T1 = P2/T2 => 2/300 = 2.8/T2 = > T2 = 2.8*300/2 =420 K
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