# Question: A process involves 1 0 kg of steam condensing to water

A process involves 1.0 kg of steam condensing to water at 100 oC.

(a) The change in entropy of the steam (water) is (1) positive, (2) zero, (3) negative. Why?

(b) What is the change in entropy of the steam (water)?

(a) The change in entropy of the steam (water) is (1) positive, (2) zero, (3) negative. Why?

(b) What is the change in entropy of the steam (water)?

## Answer to relevant Questions

During a liquid-to-solid phase change of a substance, its change in entropy is – 4.19 x 103 J/K. If 1.67 x 106 J of heat is removed in the process, what is the freezing point of the substance in degrees Celsius? An isolated system consists of two very large thermal reservoirs at constant temperatures of 100 oC and 0 oC. Assume the reservoirs made contact and 1000 J of heat flew from the cold reservoir to the hot reservoir ...A gasoline engine has a thermal efficiency of 28%. If the engine absorbs 2000 J of heat per cycle, (a) What is the net work output per cycle? (b) How much heat is exhausted per cycle? When running, a refrigerator exhausts heat to the kitchen at a rate of 10 kW when the required input work is done at a rate of 3.0 kW. (a) At what rate is heat removed from its cold interior? (b) What is the COP of the ...A steam engine operates between 100 oC and 20 oC. What is the Carnot efficiency of the ideal engine that operates between these temperatures?Post your question