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  1. Gauge pressure of air to which the ball must have been originally inflated so that it would be equal 1 bar gauge at the stadium is
    1. 2.23 bar
    2. 1.94 bar
    3. 1.07 bar
    4. 1.00 bar
Correct Option: C

P2V1 = mRT2
m = 0.6266 kg
P1V1 = mRT1

P1 =
(0.6266) (281) (288)
0.75

P1, abs = 2.07 bar
P1, gauge = 2.07 – 1 = 1.07 bar



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