Physics, 20.08.2019 19:00 Kimberley5752
Thermal windows often have all the air pumped out between the panes and a gas pumped in that is not harmful and won't react with other things. what gas would be used? a. o b. cl c. ar d. n
Answers: 1
Physics, 21.06.2019 23:30
Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)
Answers: 2
Physics, 22.06.2019 02:30
The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
Answers: 1
Physics, 22.06.2019 06:30
2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.
Answers: 2
Physics, 22.06.2019 14:30
Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2
Answers: 1
Thermal windows often have all the air pumped out between the panes and a gas pumped in that is not...
Arts, 05.11.2020 21:10
Computers and Technology, 05.11.2020 21:10
Mathematics, 05.11.2020 21:10
Medicine, 05.11.2020 21:10
Mathematics, 05.11.2020 21:10
Mathematics, 05.11.2020 21:10
Health, 05.11.2020 21:10
Mathematics, 05.11.2020 21:10
History, 05.11.2020 21:10
English, 05.11.2020 21:10
Mathematics, 05.11.2020 21:10
Mathematics, 05.11.2020 21:10
Computers and Technology, 05.11.2020 21:10
Chemistry, 05.11.2020 21:10