A sophomore with nothing better to do adds heat to 0.480 kg of ice at 0.00° C until it is all melted. Part A What is the change in entropy of the water? Express your answer with the appropriate units. ? AS, = Value Units Submit Request Answer Part B The source of the heat is a very massive body at a temperature of 25.0°C. What is the change in entropy of this body? Express your answer with the appropriate units. HA ? AS: = Value Units Submit Request Answer Part C What is the total change in entropy of the water and the heat source?

Part A Consider the following two-step process. Heat is allowed to flow out of an ideal gas at constant volume so that its pressure drops from P₁ = 2.7 atm to P2 = 1.7 atm. Then the gas expands at constant pressure, from a volume of V₁ = 5.9 L to V₂ = 9.6 L, where the temperature reaches its original value. See the figure ( Figure 1). Calculate the total work done by the gas in the process. Express your answer to two significant figures and include the appropriate units. ☐ о W = Value ? Units Figure P P₁ b P2 P 1 of 1 Submit Request Answer Part B Calculate the change in internal energy of the gas in the process. Express your answer with the appropriate units. με ? AU = Value Units V₁ V2 V

please answer all parts they are related. A) What is the thermal efficiency of this engine B) what is the total change in entropy of this ideal gas after after completing the engine cycle?

Figure p (kPa) 400 200- 100 200 300 1 of 1 - V (cm³) Copyright © 2022 Pearson Education Inc. All ri