This is all part of the same question.
Extracted text: A sample of 3 mol of Argon is put through the following cycle : Р (Рa) State 1 State 2 500 State 3 Black lines represents isotherms for a perfect gas. Processes that the gas follow are represented by the red path : 12→3→4→1. Scale is not exact, do not try to deduce P, V or T from diagram. 108 State 4 V (m³) 10 20 25
Extracted text: a. Express the kind of process for each step (1→2, 2→3, ...) b. Predict if q, w, and AU will be positive, negative, or null for each step. Explain. c. Find P, V, and I for each state. *d. Find the number of degrees of freedom (f), Cym, Cpm, and y for Argon. e. For each step, find w, q, AU, and AH. f. Add all q together, all w together, all AU together, and all AH together. What were you expecting? *¥g. If no information was given to you for State4, how would you find V4, P4, and T4? No calculations needed, just explain.