Question

In: Physics

If you have a cube of air exactly 1 cubic meter in volume at 25°C and...

If you have a cube of air exactly 1 cubic meter in volume at 25°C and atmospheric pressure,
1. How much does it weigh (absolute weight, don’t worry about impact of surrounding air) in units of lbmass and N?
2. If the air is cooled to 10°C, what happens to my cube?

Solutions

Expert Solution

Weight of the cube is

Volume of cube

Mass of the cube

Using ideal gas equation,

Weight of the cube is

Pressure

Temperature

Molar mass of air

Mass of cube is

-------------------

If the air is cooled to

Pressure

Using ideal gas equation,

, Pressure is constant , so

As the temperature decreases at constant pressure, Volume of the cube decreases.

------------

genius_generous answered 1 month ago

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