A system undergoes an adiabatic process in which its internal energy increases by 20 J. Which of the following statements is true? A. 20 J of work was done on the system B. 20 J of work was done by the system C. the system received 20 J of energy as heat D. the system lost 20 J of energy as heat E. none of the above are true

One of the consequences of the 2nd Law of Thermodynamics is:   A. You can get the same amount of energy out of a process as you put in   B. Two bodies are in thermal equilibrium when they have the same temperature   C. You can get more energy out of a process than you put in   D. The starting and finishing temperature of a cycle must be the same   E. You can not get as much energy out of a process as you put in

27) Which of the following must be true for a thermodynamic process that starts and ends at the same state? A: The total heat and work for the cycle must both be zero B: The total work equals the heat C: The value of all state functions must be different at the beginning and the end of the process D: The change in internal energy over the whole cycle must equal 0 E: The temperature of the system will be constant throughout the process

In the following situations, find the change in the internal energy of the system.   a) A system absorbs 450 J of heat, and at the same time does 210 J of work. b) 750 J of heat is removed from a gas that is held at constant volume.

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A system undergo a process consisting of the following two steps Step 1: The system absorbs 48 J of heat while 24 J of work is done on it Step 2: The system absorbs 24 J of heat while performing 48 J of work Calculate E for the overall process.

Which of the following statements explains why you cannot cool down your house by holding the refrigerator open?   Question 6 options:   Cold air in the cold box will not flow into the kitchen.   The refrigerator releases heat into the kitchen to keep the cold box temperature cold.   The refrigerator removes heat from the kitchen and then replaces it during a cycle.   Cold air in the cold box will flow into the kitchen but won't cause a noticeable temperature change.

1st and 2nd Law of thermodynamics Worksheet 1. A car engine deliver 8.2 kJ of work per cycle. Its efficiency is 25%. A) How much heat is absorbed and how much heat is exhausted from its fuel combustion? B) The car is now tuned and its efficiency goes to 31%. What are the new values of heat absorbed and heat exhausted? 1 of 3

A 1.0-kilogram cube of ice made from distilled water initially at 0 degree Celsius is placed in an adiabatic vessel containing 2.0 liters of distilled water initially at a temperature of 25 degrees Celsius. Using the information given below, answer the questions that follow: a. How many grams of the ice melts at the equilibrium condition b. How many grams of the ice will remain unmelted (if there's still any) at the equilibrium condition? c. What is the absolute temperature (in Kelvins) at the equilibrium condition? Water liquid form ice form density (g/mL) 1.00 0.997 Cp (J/ K*mole) 75.35 37.71 ΔHfusion (KJ/mole) 6.02 ΔHvaporization (KJ/mole) 40.657

Q1) There are four main thermodynamic processes that you learned from Unit 3: isobaric, isochoric, isothermal, and adiabatic. For each process below, classify it has one of these processes and then determine the signs of Q (the heat energy that flows into the gas), W (the work done by the gas), and AU (the change in internal energy of the gas). a) A container filled with an ideal gas has been submerged in a large water bath for a long time such that both reach thermal equilibrium. You then slowly compress the gas in the container. Assume the container is not well insulted so heat energy can easily flow back and forth between the water and gas and that the water bath is so large that its temperature does not change very much. b) A container filled with an ideal gas has a well-sealed piston that you put a pin in such that it doesn't move up or down. You then put the container over a burner to heat it up. c) A container filled with an ideal gas has a well-sealed piston that can move up or…