Calculate frequency of light emitted by a hydrogen a atom
1.-What is the energy of a mole of photons associated withblue light of wavelength 4.75x102 nm?
2.-Calculate the frequency of the light emitted bya hydrogen atom during a transition of its electron from the n= 4 to the n = 2 principal energy level.
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Studies have shown that the concentration (in mg/cm3 of blood) of aspirin in a typical person is related to the time t (in h ) after the aspirin reaches maximum concentration by the equation ln c = ln 14-0.32t.
Various members of a class of compounds, alkenes (Chapter11), react with hydrogen to produce a corresponding alkane. Termed hydrogenation, this type of reaction is used to produce products such as margarine.
A certain type of optical switch in a fiber-optic system allows a light signal to continue in one of two fibers. How many possible paths could a light signal follow if it passes through 600 such switches?
Determine the diameter of the pupils of his eyes that would be required for him to be able to resolve the squirrels as separate objects. In this calculation use a wavelength of 498 nm (in vacuum) for the light.
Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n= 4 to the n = 2 principal energy level.
Your accident-reconstruction team has been hired by the local police to analyze the following accident. A careless driver rear-ended a car that was halted at a stop sign. Just before impact, the driver slammed on his brakes, locking the wheels.
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 2.5x103m/s,the uncertainty in this position (in m) is at least (mass electron= 9.11x10-28g):
Sodium chloride, NaCl, crystallizes in a face-centered cubiclattice of chloride ions, with the smaller sodium ions occupyingholes between the chloride ions. How many Cl- ions are in contact with any single Na+ ion?
A propeller blade spinning at 4500 rpm has blades that are 3.00 feet long. How fast (in ft/s) are the tips of the blades moving through the air?
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