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A classroom has a length of 8 m, a width of 5 m, and a height...

A classroom has a length of 8 m, a width of 5 m, and a height of 3 m. Given that the door is open, how many air molecules leave the room if the temperature in the room increases from 293 K to 301.5 K ?

Science   Advanced-Physics   
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Answer #1

The volume of the room is 8*5*3 = 120 m^3

The door of the room is open. SO, the pressure must be equal to the atmospheric pressure.

P = 1 atm = 101325 Pa

Using

Where N is the number of gas molecules in the room,

At T = 293 K,

At T = 301.5 K,

So, the change in number of atoms is

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