contestada

An ideal gas is kept at constant volume of 2.00 L as its temperature is increased, raising the pressure from 15.0 kPa to 30.0 kPa. What work is performed by or on the gas during this process?

A) 4.00 J performed on the gas

B) 0 J

C) 30.0 J performed on the gas

D) 30.0 J performed by the gas

Respuesta :

skyluke89
The correct answer is: 
B) 0 J

Let's see why. The work done by the gas is equal to
[tex]W=p \Delta V[/tex]
where 
p is the pressure
[tex]\Delta V[/tex] is the variation of volume of the gas.

However, the problem says that the volume is kept constant (2.0 L), so the variation of volume is zero: [tex]\Delta V=0[/tex], and the work done is zero as well.


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