A helium-filled weather balloon has a volume of 508 L at 20.9°C and 754 mmHg. It is released and rises to an altitude of 7.21 km, where the pressure is 362 mmHg and the temperature is –25.1°C. The volume of the balloon at this altitude is L.
A helium-filled weather balloon has a volume of 508 L at 20.9°C and 754 mmHg. It is released and rises to an altitude of 7.21 km, where the pressure is 362 mmHg and the temperature is –25.1°C. The volume of the balloon at this altitude is L.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:A helium-filled weather balloon has a volume of 508 L at 20.9°C and 754 mmHg. It is released and rises to an altitude of 7.21 km, where the pressure is
362 mmHg and the temperature is –25.1°C.
The volume of the balloon at this altitude is
L.
Expert Solution
Step 1
According to ideal gas law,
PV = nRT
where P = pressure
V = volume
n = moles
R = gas constant
T = temperature in K = T in °C + 273
Since the balloon is a closed system. hence the moles of gas inside the balloon will remain same.
Hence n is constant
Hence PV/T = nR = constant
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