Chemistry, 10.03.2020 17:32 FreddyNoTalKing
Ethylene vapor is cooled at atmospheric pressure from 830 to 35°C by direct heat transfer to the surroundings at a temperature of 25°C. With respect to this surroundings temperature, what is the lost work of the process in kJ/mol? Show that the same result is obtained as the work which can be derived from reversible heat engines operating with the ethylene vapor as heat source and the surroundings as sink.
Answers: 3
Chemistry, 22.06.2019 04:00
Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.
Answers: 2
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Answers: 2
Chemistry, 22.06.2019 18:50
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Answers: 3
Chemistry, 22.06.2019 19:00
Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.
Answers: 2
Ethylene vapor is cooled at atmospheric pressure from 830 to 35°C by direct heat transfer to the sur...
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