Chemistry, 23.11.2019 05:31 lazavionadams81
Find an expression for the change in entropy when two blocks of the same substance of equal mass, one at the temperature th and the other at tc, are brought into contact and allowed to reach equilibrium. evaluate the change for the two blocks of copper, each of mass 500 grams with cpcm= 24.4 j kt-1 mol-1, taking th = 500 k and tc = 250 k.
Answers: 1
Chemistry, 22.06.2019 07:00
In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?
Answers: 2
Chemistry, 22.06.2019 10:40
Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3
Answers: 1
Chemistry, 22.06.2019 15:00
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
Find an expression for the change in entropy when two blocks of the same substance of equal mass, on...
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