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you are asked to prepare 19 l of a hcnnacn buffer that has a ph of 956 and an osmotic pressure of 100 atm at 298 k what
suppose that 2265 ml of a 002024m permanganate solution was needed to react with the fe 2 in a sample that had a mass
if you perform two column chromatographic separations in two columns of equal size one column packed with a silica gel
suppose that 3555 ml of permanganate solution is required to titrate 12055 grams of iron ammonium sulfate hexahydrate
an organic compound has a molecular formula c6h12o2 its ir spectrum shows a strong carbonyl absorption band near 1740
write equations for the mechanism for saponification using salicylic acid begin with nucleophillic attack of hydroxide
write equations for the mechanism for saponification of methyl benzoate begin with nucleophillic attack of hydroxide
szlig-d-glucopyranose szlig-d-glucose and dissolved oxygen are converted by the enzyme glucose oxidase into d-gluconic
determine the equilibrium constant for a ligand-substitution reaction monitored by 19f or 31p nmr
if solid potassium hexacyanoferrate iii is dissolved in water what are the formulas of the two major species that are
when the difference in ph across the membrane of a glass electrode at 25 degrees celsius is 475 ph units a how much
567 grams of metal is heated to 10000 celscuis and transferred to 1000 grams of watercs418jgc intially at 210 c in an
sucrose c12h22o11 can be mixed with potassium nitrate to form an amateur rocket propellant called rocket candy which
for the reaction2 b5h9l 12 o2g 5 b2o3s 9 h2ol hrxn -904 kj if 300 moles of b5h9 react how much heat is
a gaseous gydrogem and carbon conaining compound is decomposed and found to contain 8563 and 1437 h by mass the mass of
acid rain is caused in part by burning coal that contains sulfur impurities the sulfur is converted first to so2 which
7 302 g of n2o reacts completely with an equimolar amount of no2 to form elemental nitrogen and oxygen how much n2 is
when heated a 96 g sample of ammonium perchlorate nh4clo4 ignites and burns in the absence of any other material to
the experiment is called geometric isomerism where fumeric acid is created from maleic acid why isnt noritdecolorizing
give the corresponding atomic orbital designations that is 1s 3p and so on for electrons with the following sets of
calculate the molarity of a solution made by dissolving 125 g of na2cro4 in enough water to form exactly 550 ml of
what mass of ethane gas c2h6 must burn in excess oxygen to produce 200 x 103 kj of heat given the thermochemical
when a 600 g sample of a metal at 1000oc is added to 450 g of water at 2200 oc the final temperature of both the water
456 g of n2o reacts completely with an equimolar amount of no2 to form elemental nitrogen and oxygen how much n2 is
elemental analysis of a 352 mg sample of unknown hydrocarbon shows that it contains 301406 mg of carbon if the