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The fluorescence spectrum of anthracene vapor in the figure shows peaks with maxima at 440 nm, 410 nm, 390 nm, and 370 nm, whereas the absorption spectrum has peaks at 360 nm, 345 nm, 330 nm, and 305 nm. Assuming that only one vibrational mode contributes to these progressions, determine the vibrational spacings (in cm-1) in the ground and excited electronic states.
what are some examples of biomolecules that are detected by studying their activities
if 0.176 moles of mg have combined with 0.220 moles of o what is the empirical formula of the
Einstein reasoned that the absorbed photon must have the minimum energy required to dislodge an electron from the metal surface. This energy is called the work function () of that metal.
You run a metathetical reaction and produce NaCl as one of the products. Since NaCl is soluble in water, how can you ever recover solid NaCl to prove that you made it
how many metric tons of 5-s coal would be needed to yield the h2so4 required to produce a 3.0-cm rainfall of ph 2.00
Explain and calculate the mass of solution in a pipette if the following data has been recorded during a lab experiment
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.700M solution of ammonia, NH3, to prepare a buffer solution that ahs a pH of 8.61?
The equilibrium of Fischer esterification reactions in general is slightly towards product formation. The equilibrium can be made more favorable for product formation by all of the following except
The cereal sample without adding complexing agent was used as blank when measuring cereal sample. Why cannot we use DI water?
Write molecular, complete ionic, and net ionic equations for the reactions that occur , if any, when solutions of the following substances are mixed
A benzylic carbocation is generated under the conditions of part A. would the presence of a para CH3O- group on the benzene ring
The amount of nitrogen in an organic subsxtance can be determined by an anlytical method called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammonia.
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