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Problem- A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.06 nm. It then gives off a photon having a wavelength of 397 nm. What is the final state of the hydrogen atom? Values for physical constants can be found here.
Give reasons or calculations to sustain your answer.
The mass of the isotope, I-129, is 128.905 amu while the atomic mass of the contaminated iodine sample is 127.1982 amu. What is the mass of the contaminant?
after swimming in a pool or lake the air feels cool because heat is required to evaporate the water from our skin. how
A certain microwave delivers 750. watts (J/s) of power to a coffee cup containing 50.0 g of H2O at 25 degrees C. if the wavelength of microwave in oven is 9,75 cm how long does it take and how many photons must be absorbed to make H2O boil
the interferometer mirror of an FTIR spectrometer travels + or - 1.0 cm. Calculate the approximate resolution (cm^-1) for such a spectrometer. At what retardation interval, delta, must the interferogram be sampled to cover the spectral range of 0 ..
The initial concentrations of Pb2+ and Ag+ are 0.05M and for Cl- 1.5M. Assume all the present Pb2+ and Ag+ precipitate out of solution. Use the remaining Cl- concentration and the Ksp and Kf reactions for AgCl and AgCl2-, respectively, to determin..
three solutions are mixed together to form a single solution. on e contains 0.2 mol pbc2h3o22 the second contains 0.1
a stream of toluene at 500degc and 2 bar flowing at 40 kmolh is cooled to 200degc and 1 bar pressure in a heat
A) How will the distribution ratio for the solute be different between the stationary and mobile phase for the two columns (K - [conc] stationary phase / [conc] mobile phase). B) Explain in which column will the solute spend less time in the mobile..
.799 g sample of an unknown substance has dissolved in 15.6 g of benzene. The freezing point of the solution was 4.075 C. The freezing point of pure benzene is 5.455 C. For benzene, Kf= 5.065 C/m, and Kb=2.61 C/m. Assume that the solute is a nonel..
Use tabulated thermodynamic data to calculate ?S° for the reaction: PbO2(s) + 2Ni(s) ? Pb(s) + 2NiO(s)
when determining the melting point of your pure benzophenone some of the molten material had solidified high on the
What kind of intermolecular attractive forces would be present between the particles in the following substances
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