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  1. The amount of heat lost by the air in the football and the gauge pressure of air in the football at the stadium respectively equal
    1. 30.6 J, 1.94 bar
    2. 21.8 J, 0.93 bar
    3. 61.1 J, 1.94 bar
    4. 43.7 J, 0.93 bar
Correct Option: A

P1V1 = mRT1
m = 6.049 × 10–3kg
Q = mCv dT
Q = –43.43J
P2V1 = mRT2
P2 = 1.93 bar (absolute)
P2 = 1 – 1.93
P2 = 0.93 bar



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