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1 200 ml of a 010m weak acid ka 156x10-6 is titrated with a 020m strong basea what is the ph initially before any
the isotope 22na has a half life of 260 years how much of a 100 gram sample would be left after 100
will a precipitate form when 200ml of pbno32aq with a concentration of 250x10-4 moll is reacted with 450ml of cacl2aq
what is the ph of a 030 m pyridine solution that has kb19x10-9 the equation for the dissociation of pyridine is
the composition by mass of methyl alcohol ethyl alcohol n-propyl alcohol and water in two solutions a and b are given
naphthalene combustion can be used to calibrate the heat capacity of a bomb calorimeter the heat combustion of
if cost per gram were not a concern which of the following substances would be the most efficient per unit mass for
what is the anticpated rate in grams per minute at which ethanol will be formed at a rate of 100 l per minute at 573 k
the explosive nitroglycerin decomposes rapidly upon ignition or sudden impact according to the following balanced
limonene mw 136 is a pleasant smelling liquid found in lemon and orange peels the bp of limonene is 175 but it
065 of hydrogen chloride is dissolved in water to make 75 of solution what is the of the resulting hydrochloric acid
the standard enthalpy of formation of gaseous water is -24182 kjmol at 298 k estimate this value at 370 k the molar
when you convert units how do you decide which part of the conversion factor is in the numerator and which is in the
how would you compare the molar enthalpies of neutralization for a monoprotic acid a diprotic acid and a triprotic acid
if i add amnonia to 1 ml of copper ii sulfate solution and i am observing the mixture turn a darker blue what type of
calculate the ph of a 060 m h2so3 solution that has the stepwise dissociation constants ka115x10-2 and ka2
calculate the ph of a solution that is 0295 m in sodium formate nahco2 and 0205 m in formic acid hco2h the ka of formic
what volume of 500x10-3 m hno3 is needed to titrate 8000 ml of 500x10-3 caoh2 to the equivalence
how many milliliters of 00850 m naoh are required to titrate 250 ml of 00720 m hbr to the equivalence
formic acid hco2h ka18x10-4 is the principal component in the venom of stinging ants what is the molarity of a formic
how many millliters of 0750 m h3po4 are required to react with 250 ml of 0150 m baoh2 if the products are barium
in which solution acidic basic neutral water or doesnt matter is potassium bromide most
what ph is required to start precipitation of feoh3 from a 0110 m solution of fecl3 ksp of feoh3 40
a what mass of iron can be obtained from108g of iron iii oxideb how many grams of cl2o7 must be reacted with an excess
a mixture is made by mixing 407 ml 0000200 m hcl with 383 ml of 0000180 m naoh based upon these values the mixtures ph