An ideal gas is compressed at a constant temperature, will its internal energy increase or decrease?

Explanation

To determine whether the internal energy of an ideal gas changes when it is compressed at constant temperature, we can follow these steps:

### Step 1: Understand the properties of an ideal gas
An ideal gas follows the ideal gas law, which states that the pressure (P), volume (V), and temperature (T) of the gas are related by the equation PV = nRT, where n is the number of moles and R is the ideal gas constant.

**Hint:** Recall that for an ideal gas, the internal energy is a function of temperature.

### Step 2: Identify the process
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