Calculate Mass of Balloon with PV=mRT

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SUMMARY

The discussion focuses on calculating the mass of a helium-filled balloon using the ideal gas law equation PV = mRT. The balloon's volume is 6000 m³, the temperature is 28 degrees Celsius, and the pressure is 99 kPa. The specific gas constant R for helium is derived as R = 8.314 / Molecular Weight of helium. This equation is confirmed as the correct approach for determining the mass of the balloon.

PREREQUISITES
  • Understanding of the ideal gas law (PV = mRT)
  • Knowledge of gas constants and molecular weights
  • Basic thermodynamics concepts, particularly relating to gases
  • Ability to convert temperature from Celsius to Kelvin
NEXT STEPS
  • Research the molecular weight of helium for accurate calculations
  • Learn about the ideal gas constant and its application in different conditions
  • Study temperature conversion methods, specifically Celsius to Kelvin
  • Explore practical applications of the ideal gas law in real-world scenarios
USEFUL FOR

This discussion is beneficial for students in physics or chemistry, engineers working with gas systems, and anyone involved in calculations related to gas behavior and properties.

GoSS190
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Homework Statement


A balloon contains 6000m^3 of helium at 28 degrees C. and 99kPa absolute. Just before launch determine the mass of the balloon.


Homework Equations



Determine the mass of the balloon.


The Attempt at a Solution



I think you might have to use PV=mRT but I am not sure about how you would get R really. Any thoughts? Is that the right equation to use here?
 
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R = 8.314 / Molecular Weight of helium
 

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