4. A balloon filled with helium gas has a volume of 2023 m^3 at ground level, where the atmospheric pressure is 1.00 atm and the temperature is 20 °C ! (a) After the balloon rises to a point where the atmospheric pressure is 0.28 atm, its volume increases to 7000 m^3. What is the temperature of the atmosphere at this altitude? (b) Suppose the balloon at ground level was cooled by ice water. State the expected change in volume and density. Explain the phenomenon using kinetic- molecular theory of gas. Assume there is no leakage of gas.
4. A balloon filled with helium gas has a volume of 2023 m^3 at ground level, where the atmospheric pressure is 1.00 atm and the temperature is 20 °C ! (a) After the balloon rises to a point where the atmospheric pressure is 0.28 atm, its volume increases to 7000 m^3. What is the temperature of the atmosphere at this altitude? (b) Suppose the balloon at ground level was cooled by ice water. State the expected change in volume and density. Explain the phenomenon using kinetic- molecular theory of gas. Assume there is no leakage of gas.
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Transcribed Image Text:4. A balloon filled with helium gas
has a volume of 2023 m^3 at
ground level, where the
atmospheric pressure is 1.00 atm
and the temperature is 20 °C !
(a) After the balloon rises to a
point where the atmospheric
pressure is 0.28 atm, its volume
increases to 7000 m^3. What is
the temperature of the
atmosphere at this altitude?
(b) Suppose the balloon at ground
level was cooled by ice water.
State the expected change in
volume and density. Explain the
phenomenon using kinetic-
molecular theory of gas. Assume
there is no leakage of gas.
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