013) The minimum amount of energy (in 103) required to complety me 120 of silver initially at 288 Kis: (The melting point of silver is 1235 K: the specific beat is 236 15g K and the heat of fision is 105-10 1kg) 41.427 b) 4.93 c) 3.29 d) 2.81 3.54
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- 10. A sample of 2.37 moles of an ideal diatomic gas expe- riences a temperature increase of 65.2 K at constant volume. (a) Find the increase in internal energy if only translational and rotational motions are possible.6. For the following 1D transient heat transfer PDE problem, please write the discretized equations using finite difference method, where T„is the ambient temperature. 1 дт 0 0 ax2 k əx -ha(T – T) at x = 0,t > 0 k = -9, at x = L,t > 0 ax T = F(x) t = 0,0 < x < L (a) Using forward (explicit) method for time and central method for x, forward or backward difference methods for boundary conditions. (b) Using the backward (implicit) method for time and central method for x and boundary conditions.F Calculate the yan der Waals second viral coefficient (B) using Zy at 335.6 K, where Z is given as vdw Zydw =1+b- ,where Pc=98.9 atm, Vm.c= 132.6 cm/mol and T-462 K. V O a. 0.19 O b. -1.96 Oc.-3.13 O d. -0.15 FINISH ATTEMPT ... US PAGE Type here to search hp
- 41. (a) What is the average kinetic energy in joules of hydrogen atoms on the 5500oC surface of the Sun? (b)What is the average kinetic energy of helium atoms in a region of the solar corona where the temperature is6.00×105 K?ow much energy (in J) is required to evaporate 25% of 4g of water currently at 100 oC? The answer (in fundamental SI unit) is ___________ (type the numeric value only, dont use scientific notation)A 101 gg -gg sample of steam at 100 ∘C is emitted from a volcano. It condenses, cools, and falls as snow at 0 ∘C. (For water, 80. cal (334 JJ) is needed to melt 1 gg of ice or must be removed to freeze 1 gg of water and 540 cal (2260 JJ) is needed to convert 1 gg of water to vapor at 100 ∘C∘C.). How many kilojoules of heat were released? Express your answer with the appropriate units.
- 4. The following question was given to you earlier in class to solve: The specific internal energy of a van der Waals gas is given by u = c₂T - + constant. Show that for a van der Waals gas, the difference is given by cp - C₂ = R 30(v-b)²- To solve this problem, you require the following information: + .-I Əv/p "For any one equilibrium state, the difference in specific heats cp - C₂ = (a) Without actually showing all the detailed calculations, outline (in a list form) how the problem is solved. 2a(v-b)] 1 (b) Show that that (3r), (This time, you have to show the calculations.) (v-b) DE TOCp and Cy are specific heats at constant pressure and constant volume, respectively. It is observed that P C₁ Cv = a for hydrogen gas C₂ - Cy = b for nitrogen gas. The correct relation between a and b is - Cy р (2017 Main) 1 (a) a = b (b) a = 14b (c) a = 28b - b 14 (d) a =25 How much work is done in total for n = 100 mol, if the volume changes from an initial 2.27 m² to a final 3.9 m² in an isothermal process at a temperature of 300 K? (R = 8.314 J/mol K) Type your answer...
- Estimate the amount of heat (in J) required to raise 2kg of α-iron from room temperature (25∘C) to100∘C.10. If the temperature of a monoatomic ideal gas is raised from 90 °F to 138 °F, by how much will the internal energy of 1.40 mol of gas change? 2 A 1 tion 2 W # 3 command E $ 4 R G Search or type URL 67 2° % 5 V.. T G ^ MacBook Pro 6 B Y H & 7 Z N U J * 8 M - + K ( 9 I : ; option { [ ? 1 + 11 = 11 A IP2 657°C Isothermal 2.0 atm 37°C 3. V(L) V3 The figure (not to scale) shows a pV diagram for 3.3 g of helium gas (He) that undergoes the process 1 2 → 3. The ideal gas constant is R = 8.314 J/mol K = 0.0821 L· atm/mol K, and the atomic weight of helium is 4.0 g/mol. What is the %3D value of V3 in liters? Please give your numerical answer with one decimal place.