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a certain weak acid ha has a ka value of 66times107 calculate the percent ionization of ha in a 010 m solution
the n8 to n2 transition in bohr hydrogen atom occurs in the ------------ region of the electromagnetic spectrum a radio
a n-20 is radioactive which mode of decay would be expected for this nucleus b y-96 is radioactive which mode of decay
when 1 mol of fe2o3s is formed by combustion of feswith o2g 824 kj of heat is liberated by this reaction how many mol
a 135 m aqueous solution of compound x had a boiling point of 1014 c which one of the following could be compound x the
for a particular redox reaction mno2 is oxidized to mno4- and cu2 is reduced to cu complete and balance the equation
what is the volume change when 2 lb of h20 at 1000 psia and 20 of expands to 245 psia and 460
at a certain temperature the ph of a neutral solution is 773 what is the value of kw at that
a 25-ft3 tank of water at 160 psia and 3635 of has how many cubic feet of liquid water in it assume that you start with
does an enthalpy change from saturated vapor at 450 degf to 210 degf and 7 psia represent an enthalpy increase or
calculate the h value for an isobaric constant pressure change of steam from 120 psia and 500 of to saturated
what is the enthalpy change needed to change 1 lb of a water-steam mixture of 60 quality to one of 80 quality if the
determine eo for the following reaction using the given standard reduction potentials cr3aq cos crs co2aq eo for
calculate the number of kilograms of nitrogen n2 needed to fill 50 l cylinder to a pressure of 10 atm at temp 25
ammonia nh3 reacts with hypochlorite ion ocl- to produce hydrazine n2h4 how many moles of hydrazine are produced from
a certain liquid has a vapor pressure of 920 torr at 230 degc and 2040 torr at 450 degc calculate the normal boiling
the specific heat of a certain type of cooking oil is 175 jgmiddotdegc how much heat energy is needed to raise the
which one of the following substituents is deactivating and ortho-para directing in electrophilic aromatic substitution
the substrate 1-chlorobutane was not totally consumed in the reaction as a result a gc peak for that species appears in
four hundred kgh of steam from a low pressure turbine at 125 atm and 250 c goes into a feed water heater which preheats
a coal with the following composition is burned at a rate of 15000 kg per hour in a power plant the excess air used was
you have been asked to review the calculations of an assistant with respect to the calculation of the internal energy
a 408g sample of a compound contains 302g of oxygen what is the empirical
when iron fe crystallizes it forms body centered cubic cells the unit cell edge is 287 pm calculate the density of iron