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find the ph and volume ml of 00372 m naoh needed to reach the equivalence points in titrations of 200 ml of 00892 m
a 0050 m h2s solution contains 015 m nicl2 and 035 m hgno32 what ph is required to precipitate the maximum amount of
a gaseous compound containing hydrogen and carbon is decomposed and found to contain 8266 carbon and 1734 hydrogen by
write out all equations but you do not have to do the integration how you would calculate the absolute entropy of cl2g
the enthalpy of vaporization of ethanol is 3856 kjmol it has a boiling point of 35144 k what is the difference in
complete the following calculation a student wants to react mgs with 100ml of 15m hcl but the intent is to have all the
each of the following complex ions is either tetrahedral or square planar on the basis of the number of unpaired
one mole of benzene component 1 is mixed with 2 moles of toluene component 2 at 60 c and at such low pressure that
dinitrogen pentoxide n2o5 decomposes by first-order process with a rate constant of 37 x 10-5 s-1 at 298ka what is the
in a 050 m hcl solution an indicator is not all in acid form for methyl orange what percentage of the indicator is in
if the observed wind speed by an anemometer is 5 ms what is the wind speed at 100 m height if the value of the index p
a buffering system in the blood is h2co3hco4 at the normal blood ph 74 a solution of h2co3 and hco3 will change the ph
a buffer solution was prepared by adding 495 g of sodium acetate nach3co2 to 0250 l of 0150 m acetic acid ka 175 x
a sample of 20 grams of ammonia was placed in a 250 ml container and heated to 300 degrees c after equilibrium was
you may be required to standardize a solution of na2s2o3 in this experiment the approximate molarity of this solution
how can 1-bromopropane be used to prepare each of the following a ethanal b propanonec propanal d 2-butanonee
arrange the following aqueous solutions in order of increasing freezing point 010m glucose 010m bacl2 020m nacl and
a solution is prepared by dissolving a 056 g benzoic acid c6h5co2h ka6410-5 in enough water to make 10 l of solution
when 232 ml of 011 m hcl are added to 500 ml of a 017 m solution of a weak monoprotic base the ph of the solution is
gas at 15degc and 105 kpa is flowing through an irregular duct to determine the rate of flow of the gas co2 from a tank
bicine is a compound that contains a tertiary amino group you have 05 l of 005 m bicine with its tertiary amine in the
write the cell reaction for the combination of these half-cell reactions that leads to the largest positive cell emf
the naoh solution with a concentration of 188m is used to titrate a diprotic acid of unknown concentration 2500 ml of
a 284 g sample of c2h5oh is burned in a calorimetry containing 10 kg water the temperature of the calorimetry and its