Question: Two kg of liquid lead initially at 500C are poured into a form. It then cools at constant pressure down to room temperature of 20C

Two kg of liquid lead initially at 500°C are poured into a form. It then cools at constant pressure down to room temperature of 20°C as heat is transferred to the room. The melting point of lead is 327°C and the enthalpy change between the phases, hif, is 24.6 kJ/kg. The specific heats are in Tables A.3 and A.4. Calculate the net entropy change for this process.

Step by Step Solution

★★★★★

3.32 Rating (155 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

CV Lead constant pressure process mpbpb1Q2 PV V We need to find ch... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

E-ME-T (971).docx

120 KBs Word File

Students Have Also Explored These Related Mechanical Engineering Questions!

Liquid lead initially at 500C is poured into a form so that it holds 2 kg. It then cools at constant pressure down to room temperature of 20C as heat is transferred to the room. The...

In one type of nuclear power plant, heat is transferred in the nuclear reactor to liquid sodium. The liquid sodium is then pumped through a heat exchanger where heat is transferred to boiling water....

Heat is transferred from the sun to the earth via electromagnetic waves (Chapter 24). Because of this transfer, the entropy of the sun ________, the entropy of the earth ________, and the entropy of...

Purpose The purpose of this lab is to introduce the student to the concepts of heat transfer, specic heat capacity and phase change. Introduction As you learned in the Energy lab, energy can be...

Assignment 3 First Law Closed System 1 A 4-m x 5-m x 7-m room is heated by the radiator of a steam-heating system. The steam radiator transfers heat at a rate of 10,000 kJ/h, and a 100-W fan is used...

Purpose The purpose of this lab is to introduce the student to the concepts of heat transfer, specic heat capacity and phase change. Introduction As you learned in the Energy lab, energy can be...

Hi this is my THIRD time uploading this, the last time, the tutor did not even take the time to actually do it and Took almost 4 hours since everyone seem to not like the long questions. The first 3...

17c please circle the answers please circle the answers please circle the answers please circle the answers please circle the answers please circle the answers please circle the answers please circle...

How were the calculations done? need help writing a lab report pls and thanks. Experiment H-1 Data Sheet Trial Al Pb Item - 2 Units Aluminium lead Type of metal sample Al Pb Mass of metal sample (ms)...

20. Before it can be fed to the gasification reactor, coal is ground to meet specifications on particle size. Since the ratio of dry coal to waterin the feed to the gasifieris to be 2kg coal /kg...

Loly Corp is a company which produces sweet candies. The company predicts that it can sell 300.000 candies next year. Cost information regarding the companys operation for next year are as follows:...

Mayfair Co. allows select customers to make purchases on credit. Its other customers can use either of two credit cards: Zisa or Access. Zisa deducts a 3% service charge for sales on its credit card...

Find the volume of a frustum of a pyramid with square base of side 1 2 , square top of side 7 and height 2 0 . Volume =

Stuart Planter is a full-time teacher, and he lives in the country with his family. Stuart farms on a part-time basis. Stuart earned $85,000 in 20x6 at his full-time teaching job. During 20x6 he also...

A piston-cylinder device contains 0.85 kg of refrigerant-134a at -10C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat...

Water initially at 300 kPa and 250C is contained in a piston-cylinder device fitted with stops. The water is cooled at constant pressure until it exists as a saturated vapor and the piston rests on...

Determine the missing properties and the phase descriptions in the following table for water: T, C P, kPa u, kJ/kg Phase description (a) 200 0.6 (b) 125 1600 1000 500 (c) 2950 (P) (e) 75 850 0.0

Determine the internal energy of compressed liquid water at 80C and 5 MPa, using (a) data from the compressed liquid table and (b) saturated liquid data. What is the error involved in the second...

For each of the following equations, state the two variables which are directly proportional to each other and explain your answer. (a) v = 6v ^ 2 (b) sqrt(x) = x ^ 4

Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 52.2 degrees. Low Temperature ( OF) 40-44 45-49 50 -54 55-59 60-64 Frequency...

\ table [ [ , State of Nature ] , [ , Rezoning Approved,Rezoning Not Approved ] , [ Decision Alternative, s 1 , s 2