An air compressor does 2.5 × 106 joules of work in raising the pressure of a quantity of air while the temperature of the air remains constant. what is the heat added to the system? identify the thermodynamic process.

Explanation:

According to the 1st law of thermodynamics, we have:

where

is the change in internal energy of the system

Q is the heat absorbed by the system

W is the work  done by the system

We also know the change in internal energy of a system only depends on the change in temperature:

Since here the temperature of the air remains constant, the change in internal energy is zero:

So the first equation becomes

The work done by the system here is

Therefore, the heat added to the system is

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