Evaluate the entropy change, Chemistry

A house is air conditioned using solar energy.  Solar radiation heats a pressurized tank such that the temperature is maintained at 175oC.  1500 kJ must be extracted from the house to maintain the temperature at 24oC when the ambient temperature is 33oC.

Determine the minimum amount of heat that must be extracted from the tank of water by any device built to accomplish the required cooling of the house

A 2kg piece of copper at 200oC is taken out of a furnace and is allowed to cool in air with an ambient temperature of 25oC.  Calculate the entropy change in the universe as a result of this process.  The Cp of copper is 0.38 kJ/kg K.

Posted Date: 3/11/2013 1:17:51 AM | Location : United States







Related Discussions:- Evaluate the entropy change, Assignment Help, Ask Question on Evaluate the entropy change, Get Answer, Expert's Help, Evaluate the entropy change Discussions

Write discussion on Evaluate the entropy change
Your posts are moderated
Related Questions
Measure the combustion energies for the burning of 1 mol of propane and butane gas in air under these conditions. Calculate the efficiency of the combustion process as a functi

Q. Describe Oxosalts? In these minerals, metals are present as their oxosalts, such as carbonates, sulphates, nitrates, phosphates, borates and silicates. Some important minera

Q. Important applications of indium? The most important applications of indium are in protection of bearings against wear and erosion in low melting alloys and in electronic de

By who can sublimation be useful? How can it be useful?

The total number of electrons that can be accommodated in all the orbitals having principal quantum number 2 and azimuthal quantum number 1 is: (1) 2        (2) 4

A sample of caco3 and mgco3 weighing 192 g is ignite to constant weight of 10 g. calculate sample composition.

Which of the metal ion will have highest number of unpaired electrons: (1) Cu +                  (2)  Fe +       (3) Fe 3+                             (4) Co 2+ A

give the mechanism of additin of HCN to acetaldehyde?????

Ionic Radii   The experimentally calculated anion-cation distances in highly ionic solids have to be interpreted on the assumption that each and every ion has a nearly fixed

Q. Objectives of transition elements of the f-block? After studying this unit you should be able to: distinguish between transition and inner-transition elements, d