Question

Question 1 (of 10) value: 10.00 points 1 out of 3 attempts Assista Round your answers to six decimal places. Chec Six grams of computer chips with a specifie heat of 0.3 kl/kg-K are initially at 17°C. These Try A chips are cooled by placement in8 grams of saturated liquid R-134a at -38°C. Presuming that the pressure remains constant while the chips are being cooled, determine the entropy change of (a) the chips, (b) the R-134a, and (c) the entire system. Is this process possible? Why? ing View View Print Repo Part 1 out of 4 (a) AS chips kJ/K next A, b, c please
Answer A should be negative
Answer B should be in KJ/K
0 0
Add a comment Improve this question Transcribed image text
Answer #1

Write the equation for the change of entropy in the chips.

Here, is the mass of the chips, is the specific heat of chips, is temperature at state (2), and is temperature at state (1).

Substitute for , for ,  for , and for .

\DeltaSchips = 0.006*0.3* ln((-38+273)/(17+273))

Therefore, the change in entropy of the chips is

-3.8*10^-4 kJ/k

Add a comment
Know the answer?
Add Answer to:
A, b, c please Answer A should be negative Answer B should be in KJ/K Question...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be...

    Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 140 kPa. The refrigerant absorbs 175 kJ of heat from the cooled space, which is maintained at -10°C, and leaves as saturated vapor at the same pressure. Determine the entropy change of the refrigerant. Use the tables for...

  • Options A. 8.7250 kJ/K B. 4.4476 kJ/K C. -4.4475 kJ/K D. None of above 1 kg...

    Options A. 8.7250 kJ/K B. 4.4476 kJ/K C. -4.4475 kJ/K D. None of above 1 kg of saturated liquid water at 10 bar is heated at constant pressure until it is! entirely converted to saturated vapour. What is the entropy change of the water for this process?

  • 5. Refrigerant-134a at 700kPa, 70°C, and 8 kg/min is cooled by air in a condenser until...

    5. Refrigerant-134a at 700kPa, 70°C, and 8 kg/min is cooled by air in a condenser until it exits as a saturated liquid at the same pressure. The cooling air enters the condenser at 1MPa and 10°C and leaves at 17°C at the same pressure. Determine: a) Considering only the Refrigerant as a system, the heat transfer rate of a refrigerant from the condenser in (kl/min). R-134a Tables are attached! b) The mass flow rate of the air required for cooling...

  • Please write equations clearly and table numbers Refrigerant R-134A is trapped inside a piston-cylinder assembly. The...

    Please write equations clearly and table numbers Refrigerant R-134A is trapped inside a piston-cylinder assembly. The refrigerant undergoes a compression process from a pressure of 400 kPa containing 55% saturated liquid to a final pressure of 600 kPa. During the compression process, a total of 110 KJ/kg of heat is transferred out while the boundaries of the cylinder are maintained at 100°C, which is also the temperature of the surroundings During this process the entropy generation is o.06749 kJ/kg K....

  • 2- Therro dynamics e that best completes the statement or answers the question TIPLE CHOICE. Choose...

    2- Therro dynamics e that best completes the statement or answers the question TIPLE CHOICE. Choose the one alternative that best completes the at 1) The SI unit for pressure is the A) newton. B) pascal C) MM Hg D) atmosphere. 2) The mixing of different gases by random molecular motion with freque A) diffusion. B) Dalton's law. C) compressibility. D) effusion 3) Entropy is a measure of A) the rate of a reaction. C) molecular randomness. B) free energy...

  • i need help on finding the last information im having trouble with creating a graph from the excel spreed sheet if some one could guide me through the steps, please. What should I place in exc...

    i need help on finding the last information im having trouble with creating a graph from the excel spreed sheet if some one could guide me through the steps, please. What should I place in excel to create the graph when I placed the water bath and temp as well as HCI added it gives me seprate lines. Thanks in advance. C. Data Analysis pse of all buret washin You will the titrant heed to provide your data to your...

  • Please answer question 1, parts A,B,C, and D+E if possible. Use formulas to express your solutions!...

    Please answer question 1, parts A,B,C, and D+E if possible. Use formulas to express your solutions! Be sure to show all work used in the problems including equations, and how you got to the solution. I need to understand the math behind the solution and how you got to the answer. Thank you! AutoSave OFF OF UA HW2P3 - Compatibility Mode a Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Times New... v v 12...

  • please answer the prelab excercise:) I tried doing it but I did not get very far Experiment 7: Grignard Reactio...

    please answer the prelab excercise:) I tried doing it but I did not get very far Experiment 7: Grignard Reaction. Introduction Discovered by French chemist Victor Grignard, the reaction that now bears his name is an example of the preparation of an organometallic reagent. In this lab, phenylmagnesium bromide is the Grignard of interest, and it will be added to an aldehyde to produce an alcohol. Lab Objectives 1. To study organometallic reagents in general. benzophenone. 2. To prepare phenylmagnesium...

  • Can someone help me finish my table? all the inforamtion is there. molarity of HCL =0.5M g...

    can someone help me finish my table? all the inforamtion is there. molarity of HCL =0.5M grams of borax = 18.41g the Relationship between Thermodynamics and Equilibrium 21 Complete the data table for each temperature studied. Beaker Label 42 °C 45 °C 36 ° C 39 °C 33 °C 2EC 138℃-2°C| ーでー 46℃ Temperature reading (C) Absolute temperature (K) 1/T Final buret reading Initial buret reading Volume of HCI Moles of H+ Moles of B Os(OH)2 Molarity of B,Os(OH)2 306.230.2...

  • Hello, I need question 1 sections a,b,and c. Please make around a page long. CHAPTER 4...

    Hello, I need question 1 sections a,b,and c. Please make around a page long. CHAPTER 4 Techniques for Understanding Consumer Demand and Behavior 109 t effect. ed that managers be familiar with both approaches because each provides useful ues need to realize that marketing analysis builkds on the fundamental eco- of demand and elasticity. Marketers take these basie economie n Table 3.7 in goies and develop analyses of brand differentiation, market segmentation, and dct pricing, While some of the formal...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT