QUESTION 7 Consider a molecule with 8 degrees of freedom. Select the heat capacity at constant volume of an ideal gas containing N of these molecules. a. 8NKT b. 8Nk O C. 4NKT O d. 4Nk e. (3/2) Nk O f. (3/2) NkT
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- The temperature of a cup of water drops by 44oF when it is placed in a refrigerator for 45 minutes. How much did the temperature of the water change in K, oR and in oC. a. -24.4K, -44oR, -24.4oC b. -44K, -44oR, -24.4oC c. -44K, -24.4oR, -44 oC d. 24.4K, -24.4oR, -44oCA 200 g piece of ice at 0o C is placed in 500 g of water at 20o C. This system is in a container withThis system is in a container with negligible thermal capacity and isolated from its surroundings.a. Could the equilibrium temperature be 0o C, or 20o C? Justify. b. Who provides and who receives heat in the system? The one who supplies, supplies how much heat? Justify. c. Based on the answer above, what can you tell us about the phase of the system, i.e., how much ice and water is there?Justify. d. Based on the answer above, what is the equilibrium temperature of the system? JustifyThe temperature of 4 mole of an ideal gas is increased from 114 K to 524 K, and its given that C, R.Calculate the AS (J/K), if the volume is constant. O a. 76.1 O b. 50.7 O c. 380.4 O d. 114.1 3/2
- B: Choose the most correct answer for the following multiple-choice questions: 1) For ideal gases, the specific heat at constant volume is . the specific heat at constant pressure. A. Less than B. equal to C. greater than D. All of the above E. None of the above 2) The sign of added heat is always. . , and the sign of added work is always .. . B. positive, positive C. negative, positive D. negative, negative A. positive, negative E. None of the above 3) According to the today weather conditions in the Mechanical Engineering Department, the condition of the water that you are drinking during the exam is A. subcooled B. saturated liquid C. saturated steam D. wet steam E. superheated steam 4) Heating a saturated liquid at constant volume produces a ., saturated steam at constant volume produces a . . A. subcooled liquid/wet steam steam D. wet steam/superheated steam E. subcooled liquid/superheated steam whereas, heating a B. wet steam/saturated liquid C. wet steam/wet 5) If a gas…What concept \describes when you stand near a campfire?A. EnthalpyB. EntropyC. Latent Heat Describe the movement and changes that take place in a large energy reservoir that all processeswithin it are quasi-static.A. Very slow and very minuteB. Very slow and very bigC. Very fast and very minuteD. Very fast and very bigQ1. a) How much of oxygen gas can be heated from OC to 100C degrees by amount of heat 0.1 kcal. b) How much will the kinetic energy of gas molecules change if gas expands at constant pressure?
- thermodynami. P (Pa) A 900 в 600 300 2 V (m) 4 6 2. One mole of a monatomic ideal gas is taken from state A to state B isobarically. a. How much work is done on the gas during the process A→B? b. What is the change in internal energy UA- UB? c. Is heat added or removed from the gas during the process A→B? d. How much heat is added or removed from the gas? The state of the gas is changed from B>C where the pressure drops to 300 Pa without any change in volume and after the gas is compressed to point A isothermally. e. On the diagram below show the complete cycle A→B→C→A. P (Pa) A 900 B 600 300 2 4 V (m³) b a V 3 An ideal gas can be taken from state a to state c in three different paths: a- har P.What is the average translational kinetic energy of ideal gas molecules of temperature T = 3°C? Use KB=1x10-23 J/K. A. 4.14x10-21 J B. 4.5x10-23J C. 4.14x10-23J D. 4.5x10-21 J E. 1x10-23J OE D C OA BThe temperature of a cup of water drops by 44 degree Fahrenheit when it is placed in a refrigerator for 45 minutes. How much did the temperature of the water change in K, oR and in oC . a. -44K, -24.4oR, -44 oC b. -24.4K, -44oR, -24.4oC c. -44K, -44oR, -24.4oC d. 24.4K, -24.4oR, -44oC
