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calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n 6 to
a chemist prepares a solution of potassium iodide by measuring out 220 x 10-6 mols of potassium iodide into a 350 ml
breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kjmol what is the longest wavelength of light that
which of the following compounds is a positive effector of the allosteric enzymes isocitrate dehydrogenasea atpb fadc
the normal range for the carbonyl of a ketone is 1715 cm-1 why does the carbonyl peak for cyclopentanone appear at 1750
the carbonyl peak of benzaldehyde appears as a very strong and intense peak at 1703 cm -1 normally the carbonyl peak of
what is the retention factor for the following tlc plate if the baseline is 1 cm elution solvent traveled 5 cm from the
a 522 mg portion of tri-protonated arginine is disolved in 9955ml of distilled deionized water then 45mls of 015n naoh
a proton that absorbs radio frequency radiation at higher field strength will appear in a 1h nmr spectruma at 0 ppmb
a certain ore is 328 nickel by mass how many kilograms of this ore would you need to dig up to have 100g of
treatment of cyclohexanone in the presence of sodium borohydride results in a product that can be isolated and purified
part 1the volume of ice has been estimeted to be 285 x 106 km2 the density of ice is 918 kgm3 the radius of the earth
648g of nah2po4 and 2196 g of k2hpo4 are dissolved in sufficent water to make a liter of solution caluclate the ph of
17g of 23-dimethyl-13-butadiene is refluxed with 17g of maleic anhydride in toluene and 1g of product is recrystallized
the density of water is 100 gml and the density of propanol c3h8o is 0866 gml what volume of propanol contains the same
acetate ion and acetic acid in a 6-liter solution to which have been added 24 mole of hcl and 064 mole of sodium
a solid aluminum sphere has a mass of 87g how do you use the density of aluminum to find the radius of the sphere in
a box contains a mixture of small copper spheres and small lead spheres the total volume of both metals is measured by
what are the concentrations of acetic acid and acetate ion in 035m acetate bufferph 460 the pka of acetate is
heat energy is added to a 352g block of nickel and the temperature increases from 21 c to 53 c if the same amount of
if 0230g of sodium metal reacts with 0355g of chlorine gas what is the mass of sodium chloride
if you were to prepare a 100 solution of beginning with water at 215 what would the final temperature of the solution
the earth has a radius of about 635 106 m and a mass of 598 1024 kg what would be the radius if the earth had the same