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What is the role of the quantum defect in the electronic spectra of the gaseous alkali metals? Can we define a single quantum defect for a given atomic species?
Carvone is the major constituent of spearmint oil. What products would you expect from the reaction of carvone with the following reagents
Question- A drinking water has a calcium concentration of 17 ppm. What is the pH of this lake? It may (or may not ) help to remember that the atomic weight of calcium is 40.1 g/mol.
The ReO3 structure is cubic with Re at each corner of the unit cell and one O atom on each unit cell edge midway between the Re atoms. Define this unit cell and determine
Based on the amount of water you used during the recrystallization ( 36 ml ) estimate the amount of salicylic acid that was lost as a result of being dissolved in the filtrate.
The half life of a first-order reaction was found to be 439 s; what is the time constant for the reaction
Using a phosphorus 12.39 g sample that reacts with 42.54 grams of chlorine to produce only phosphorus Trichloride (PCl3). If it is the only product, determine what mass of PCl3 is formed?
a sample of gas changes from p1v1 and t1 to p2v2 and t2 by one path and then back to p1v1 and t1 by another path.which
Problem- The retention factor, Rf, is a quantity used in all types of chromatography to determine effectiveness of solute separation. Describe the mathematical basis of the Rf and tell how it is used
A fluoridated water supply contains F- at a concentration of 8.9 ppm. What is the maximum concentration of Mg2+ that can exist in this water supply without causing precipitation.
which is more deshielding to surrounding protons, a carbon double bonded to oxygen (a carbonyl group) or a benzyl substituent
Lead nitrate, Pb(NO3)2, reacts with sodium sulfate, Na2SO4, to make lead sulfate, PbSO4, and sodium nitrate, NaNO3. How much lead sulfate can one make from 65.05 g lead nitrate and 55.02 g sodium sulfate? Explain fully how you came to you answer. I..
Urea is an organic compound widely used as a fertilizer. its solubility in water allows it to be made into aqueous fertilizer solutions and applied to crops in a spray. what is the maximum number of water molecules that one urea molecule can hydrog..
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