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- (a) If tossing 100 coins, how many ways (microstates) are there to get me three most likely macro states of 49 heads and 51 tails, 50 heads and 50 tails, and 51 heads and 49 tails? (b) What percent of the total possibilities is this? (Consult Table 15.4.)(a) Construct a table showing the macro states and all of the individual microstates for tossing 13 coins. (Use Table 15.5 as a guide.) (b) How many macro states are there? (c) What is the total number of microstates? (d) What percent chance is here of tossing 5 heads and 1 tail? (e) How much more likely are you to toss 3 heads and 3 tails than 5 heads and 1 tail? (Take me ratio of the number of microstates to find out.)A. Read each item carefully and choose the letter of the correct answer. 1. Which of the following statements best describes the Second Law of Thermodynamics? A. The internal energy of the universe is constant. B. Energy can neither be created nor destroyed. C. At absolute zero, the entropy of a crystal is considered to be zero. D. When an isolated system undergoes a spontaneous change, the entropy of the system increases. 2. Which of the following represents a spontaneous process? A. ∆S<0 B. ∆S=0 C. ∆G>0 D. ∆G<0 3. Which of the following has the most entropy? A. an empty classroom B. a tennis ball inside a box C. a flock of birds flying in V formation D. a crowd of people on the streets of Santa Rosa City B. Predict whether ∆S is positive or negative for the reaction: N2(g) + O2(g) → 2NO(g) C. Which has greater entropy? 1mole of NaCl(5) or 1 mol of HCl(g)
- The 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 3/2What 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 bigB: 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…
- The molar heat capacity of an ideal gas at constant pressure is equal to its molar heat capacity at constant volume plus ___a. the ideal gas constant b. pressurec. volumed. forcethermodynami. 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.Which of the following statemtents is inconsistent with the second law of thermodynamics? a. The entropy of the universe tends to increase. b. Perpetual motion machines are impossible. c. The arrow of time moves in the forward direction. d. A refrigerator cycle is a spontaneous process. e. Heat spontaneously flows from high temperature to low temperature regions.
- How much energy will be consumed by a 400W rice cooker operating for half an hour?a. 12 Jb. 24 kJc. 72 kJd. 720 kJ8. A metallic key ring is cooled down. Which of the following will happen to the insidediameter of the key ring?a. Shrinkb. Expandc. Stay at the same sized. None of the above9. What happens to the internal energy of a gas if increasing temperature under constantvolume?a. Decreaseb. Increasec. Do not changed. Cannot be determined7. An ideal gas (R = 0.26 kJ/kg "K) initially at a pressure of 60 kPa and volume of 0.1 m is compressed isothermally at 25 'C to a pressure of 120 kPa. Calculate: a. change in internal energy b. change in enthalpy c. change I entropy d. heat transferred e. non-flow work f. flow work34. Which of the following statements is a good representation of the 2nd law of thermodynamics: a. Energy can not be created or destroyed; it can only be converted from one form to another. b. Knowing the total internal energy of a system is not necessary, only the change of it is important in calculations of thermodynamic parameters. c. State variables are those parameters that are independent of the path of the thermodynamic process, and depend only on the current state of the system. d. Natural processes occur in a direction of dispersing the energy. e. In all processes whether natural or otherwise, the total energy is conserved.