A gas occupying a volume of 0.39 m ^ 3 at a pressure of 1.55 * 10 ^ 5 Pa isothermally increases the volume by 10 times, then isochorically heated to the initial pressure. In this case, 1.5 * 10 ^ 6 J of heat was reported to the gas. Depict the process in coordinates p, V and V, T. Determine the number of degrees of freedom of gas molecules.

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