13.25- The Ideal Gas Law Part A Large helium-filled balloons are used to lift sc

Question

13.25- The Ideal Gas Law Part A Large helium-filled balloons are used to lift scientific equipment to high altitudes. What is the pressure inside such a balloon if it starts out at sea level with a temperature of 11.0°C and rises to an altitude where its volume is twenty times the original volume and its temperature is -48.0°C Submit Answer Tries 0/5 Part B What is the gauge pressure (in atm)? (Assume atmospheric pressure is constant.) (You do not need to enter any units.) Submit AnswerTries 0/5

Explanation / Answer

T1 = 11 = 273 = 284 K

T2 = -48 + 273 = 225 K

P1 V1 / P2 V2 = N k T1 / N k T2

P2 = P1 V1 T2 / V2 T1  

= P1 T2 / 20 T1

= 1.013 X 105 X 225 / 20 X 284

P2 = 4012.764 N/m2

or

0.0396 atm

b )

P ' = 4012.764 - 1.013 X 105

= - 97.287 X 103 N/m2

or

0.9601 atm

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