Calculate Density of Ideal Gas at 250 kPa, 4 g, 50 cm^3

Thread starter kmkindig
Start date Apr 20, 2009
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Density

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To calculate the new density of the ideal gas when the volume is reduced from 100 cm^3 to 50 cm^3 while maintaining a constant temperature and pressure of 250 kPa, the mass remains at 4 g. Density is defined as mass divided by volume, so the initial density is 4 g/100 cm^3, which converts to 40 kg/m^3. When the volume changes to 50 cm^3, the new density becomes 4 g/50 cm^3, resulting in a density of 80 kg/m^3. The relationship between pressure, volume, and temperature is governed by the ideal gas law, but in this case, only the volume change affects density. Understanding these principles is crucial for accurately calculating gas properties under varying conditions.

Apr 20, 2009

kmkindig

A 100 cm^3 container has 4 g of an ideal gas in it at 250 kPa. If the volume is changed to 50 cm^3 and the temperature remains constant, what is the new density in kg/m^3.

Any help would be greatly appreciated to help me understand! Thanks

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Apr 20, 2009

mgb_phys

Science Advisor

Homework Helper

Density is mass/volume
What have you changed, what stays the same?

Apr 20, 2009

djeitnstine

Gold Member

PV=nRT

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