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Suppose we have 8.1 moles of an He gas. Its initial temperature is 27 C and pressure is 2*105 N/m2. Now we take the gas over the path, shown in figure A -> B -> C. We can safely assume the condition of an ideal monoatomic gas (Cp = 5/2R and Cv = 3/2R). 1. What is the work of the gas when it expands from A -> B? 2. What is the variation of the internal energy from A->B? 3. What is the heat absorbed from A -> B 4. What is the heat absorbed from B->C if the process in that segment is adiabatic? p (N/m?) 2 x 105 x 105- C 0 1.0 1.5 2.0 V(m 3 )