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a chem major obtains a high-paying summer job and is given the task of determining the ethanol content in vol of a
consider two acids hcn and consider two acids hcn and
a 43 kg person drinks 430 g of milk which has a caloric value ofapproximately 30 kjg if only 15 ofthe energy in milk is
a 1526 g sample of a polymer dissolved in 100 l of a benzene solution at 22degc has an osmotic pressure of 452 x 10-2
when 514g of biphenyl c12h10 undergoes combustion in a bomb calorimeter the temperature rises from 258 degrees c to 294
the molecular weight of an unknown gas was measured by an effusion experiment it was found that it took 64 seconds for
calculate the volume of 60m naoh solution that you would need to prepare 500ml of a 15m naoh solution formula weight of
asolution is prepared by dissolving 2244 grams of acetic acid inenough water to make2500 ml of solution a 2500-ml
a gas is confined to a cylinder with a moveable piston to allow the gas to expand or contract under a pressure of 1
a solution of hydrochloric acid has a volume of 250 ml and a ph of 192 exactly 250 ml on 00105 m naoh is added what is
a persons blood alcohol c2h5oh level can be determined by titrating a sample of blood plasma with a potassium
a sample consisting of 10 mol caco3s was heated to 800 degc when it decomposed the heating was carried out in a
suppose that you take 5000 gram of na2co3 and titrate it with 115m hcl solution what is the equivalence point volume
suppose that a student is determining the total base content of an antacid tablet by performing a back titration heshe
0394 mol of a solid was dissolved in 340 ml of water at 269 oc after the solid had fully dissolved the final
insoluble pbbr2snbspnbspprecipitates when solutions of pbno32aqnbspand nabraqnbspare mixedpbno32aq 2nabraq ---gt
what is the minimum amount of 60 m h2so4nbspnecessary to produce 250g of h2g according to the reaction between aluminum
a student takes 50ml of a stock fescn2 solution and dilutes it with deionized water to a volume of 50ml he then puts
aqueous lithium sulfate was mixed with aqueous strontium chlorate and a crystallized strontium sulfate product was
q1 in your gravimatric analysis experiment you weigh the precipitate of agcl in a filtering crucible you have to weight
1 suppose 1000 ml of an aqueous solution containing an unknown monoprotic acid called ha is titrated with 0150 m koh
a 41 kg person walking 56 kmhr requires 758 kj of energy per hour how much further does he have to walk to consume the
a sample of cobalt ii chloride hydrate starts with a mass of 335 g after heating the sample mass is 183 g what is the
what are the symbol and name of the element whose average atoms have a mass very nearly half the mass of an average
when benzene c6h6 reacts with bromine br2 bromobenzene c6h5br is obtained c6h6br2rarrc6h5brhbrwhat is the