# Problem: (a) Four moles of a monoatomic ideal gas undergoes a process in which the temperature of the gas increases from 300 K to 500 K while the pressure is kept constant at 2.00 x 105 Pa. What is the change in internal energy of the gas? Indicate whether the internal energy increases or decreases.       (b) Four moles of the gas undergoes a process for which the volume is 3.00 m 3 and is kept constant while the pressure decreases from 4500 Pa to 3600 Pa. What is the heat flow Q for this process? Does heat flow into the gas or out of the gas?

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(a) Four moles of a monoatomic ideal gas undergoes a process in which the temperature of the gas increases from 300 K to 500 K while the pressure is kept constant at 2.00 x 105 Pa. What is the change in internal energy of the gas? Indicate whether the internal energy increases or decreases.

(b) Four moles of the gas undergoes a process for which the volume is 3.00 m 3 and is kept constant while the pressure decreases from 4500 Pa to 3600 Pa. What is the heat flow Q for this process? Does heat flow into the gas or out of the gas?