Objectives: Pressure, volume & temperature
in static conditions
Announcements: Popcorn Lab Thurs.
Would anyone like to donate an air popper?
Warm-ups: Molar Volume
Show me your homework (gas law problems)
The constants in the gas laws
Ideal gas law
Ideal gas constant
Sample Problem:
When filling a weather balloon with
gas you have to consider that the gas will expand greatly as it rises and the
pressure decreases. Let’s say you put about 10.0 moles of He gas into a balloon
that can inflate to hold 5000.0L. Currently, the balloon is not full because of
the high pressure on the ground. Calculate the pressure (in KPa) in the balloon
when the balloon rises to a point where the temperature is -10.0°C and the
balloon has completely filled with the gas.
Homework:
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