第四小題，旁邊一張是別人的答案，但理想氣體的壓力不是比真實氣體的壓力低嗎？他是不是寫錯了

species A in the mixture at its final state. (2%) (3) Please describe Carnot's Theorem and the Third law of Thermodynar (4) Please describe the differences between ideal gas and real gas (2%) (5) In Van der Waals equation of state, please describe the meaning c briefly.(4%) (6) Please define Gibbs free energy (G), state the limiting factors and energy [3%]

第二小題這樣寫對吧？

(1) Please write down the energy balance equations (2) The initial state of an ideal gas mixture was 500K, and 30 bars. Next, the temperature was reduced to 300K. Assume that the mole fraction of A was 40%, Please calculate the partial pressure of species A in the mixture at its final state. (2%) (3) Please describe Carnot's Theorem and the Third law of Thermodynamics and. (2%) (4) Please describe the differences between ideal gas and real gas (2%) (5) In Van der Waals equation of state, please describe the meaning of parameter "a" and "b" 100

🧍‍♀️

for an ideal conductor; (D) All; (E) None. A conductor has a surface charge density o C/m². The force per unit area on the surface is (A) 0; (B) σ²/2 80 N/m²; (C) o²/ɛo N/m²; (D) 20² /ɛo N/m²; (E) None.

哈囉，拜託誰能救一下

One mole of an ideal monatomic gas is taken around the reversible cycle shown in Figure.1 (on the right). What is the efficiency of this "heat engine"? (A) 4/21; (B) 5/14; (C) 6/11; (D) 7/34; (E) None. 3Po Por 4 a Q4 d Vo est C Q2 2%

要死了🥲

Which statement is not correct for the "shear modulus"? (A) It has the same dimension as the "pressure"; (Bt involves the application of two parallel forces of opposite directions along the same line; (C) It can not be defined for an ideal fluid; (D) All; (E) None.

請問為什麼是用未來式

121~23 Dear Maggie, a me I had a date with my classmate, Joe, last Saturday. He's a polite man. He always _21. what I wanted to do, and he helped me carry the shoes I bought. After the date, he drove me home. How considerate he was! However, he talked a lot about his favorite sports, like tennis and golf. You know, I am not interested in sports at all. When I 22. about the singer, A-mei, he looked bored. I don't know if he 23. my ideal boyfriend. What do you think? Write me back, please. Anita considerate 1966 golf #IR ideal 1985

為何壓縮功是負的，我知道題目的敘述功是負的，但對氣體壓縮的功正常來說不是都是正的嗎？

***An ideal gas does 80 J of work when compressed isobarically. The heat given to the gas during this process is: (Cym= 2.5R) (Hint: w=-PAV for isobaric process ) (A) 700 J (B) 350 J. (C) 280 J (D). 300 J. (E) 2001- 答案:C w= 80J= -PAV (for isobaric process). PV=nRT. PAV-ORAT AU-n*2.5R* AT-2.5"(PAV)-2.5*80=200J. AU-q+w-200--80+q- 9-780J.

第三小題錯在哪裡

3.)* True/false: Find the incorrect conclusions from the following sentences and correct them. (12 points) b H2 •T2 H An ideal gas changes its states isothermally through a chemical reaction. AH is zero because AH is equal to Cp x AT. H TI ® The pressure change does not contribute to the energy state (U or H) of ideal gases. P * Figure 1 is correct for illustrating the enthalpy state of real gases. Fig. 1 AT1 ATL+1a na:daalraa ahonnan kantot fo. U +- IT 1.1 D1

第三題為何是3啊⋯⋯ expansion那內能差不就是小於0嗎，

(3) Pushing the piston down so as to do work on the system 3 PV a (c)Multiple Choice: What is the correct result for reversible isobaric process in which an ideal gas undergoes an expansion form 1 L to 10 L in a closed system? BU-atw DHECPAT (3 points) Pv=nRT AU=croTo (1)w > 0, AU>0,q>0; (2)w >0, AU<0,q<0; (3)w<0,AU>0,q>0; (4)w <0, AU<0,q<0 个小 finat low of thermodynamics takes the

第一題 怎麼想

1.) True/false, multiple choice or short answer. “*” denotes more than one correct answers. (33 points) (a) Multiple Choice: I will have the largest energy transfer as expansion work from an ideal gas system 1o the surroundings if I use a process that is (3 points) (1) Isothermal and quick ;(2) adiabatic and quick ;( 3) isothermal and slow; (4) adiabatic and slow