subject
Chemistry, 16.10.2019 18:30 kenziesanders01

One gram of a metallic object of constant heat capacity cp=400 j °k-1g-1 is heated to temperature 500°k. this time it is cooled in two stages. first it is thrown into a large vessel containing boiling water. when it has reached equilibrium with the water, it is thrown into the sea as before. calculate the four entropy change occurs in the cooling processes (a) in the object due to the first cooling. ∆s=-117.21 j/k. (b) in the boiling water. ∆s=136.19 j/k. (c) in the object due to the second cooling. ∆s=-100.68 j/k. (d) in the sea. ∆s=114.48 j/k. (e) what is the total entropy change ∆s? explain why ∆s is smaller or larger than that of the previous problem. ∆s=32.78 j/k. (f) how can we make the total entropy change ∆s = 0?

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 21.06.2019 23:00
Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?
Answers: 1
question
Chemistry, 22.06.2019 10:30
Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic
Answers: 1
question
Chemistry, 22.06.2019 13:50
How does the motion of particles in a gas change as the gas cools
Answers: 2
question
Chemistry, 22.06.2019 14:30
Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.
Answers: 1
You know the right answer?
One gram of a metallic object of constant heat capacity cp=400 j °k-1g-1 is heated to temperature 50...
Questions