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a lab chemist used gravimetric analysis to determine the lead content in a pond near a battery manufacturing plant a
a standard solution of sodium hydroxide is made by dissolving 150g of naoh in 250 ml of water the resulting standard
calculate the change in internal energydelta e for a system that is giving off 650 kj of heat and is performing 975 j
geologists can estimate the age of rocks by their uranium-238 content the uranium is incorporated in the rock as it
explain which of the following species has the shortest strongest covalent bond cn- co2 c22- co2-
titanium iv oxide tio2 is the substance used as the white pigment in paint it is prepared according to the following
if 251 ml of 01222 m naoh id required to reach the first equivalence point of a solution of citric acid h3c3h5o7 how
consider the following acids and their dissociation constants a hpo42-aq h20lltgt h3oaq po43-aq ka2210-13 hcooh aq
why is the meso-stilbene dibromide much less soluble in all solvents than the dl-isomer from the bromination of
write the formulas of the conjugate base for each of the following acids a hco3- b ch3--nh3 c hpo42- d hno4- e
a 3026 g portion of a copperii salt was dissolved in a 250 ml volumetric flask a 0 ml aliquot was analyzed by adding 1
a galvanic cell consists of an agsagaq half cell and a znszn2 half-cell connected by a salt bridge write the two half
indicate whether each of the following statements indicates an acid or a base a makes a red ant sting b produces oh- in
tartaric acid is dissolved into distilled water and then diaminocyclohexane is added what sort of reaction is taking
an unkown metal crytallizes in one of the three cubic latticesthe edge length of the unit cell is 408pm given that the
an unkown metal crytallizes in one of the three cubic latticesthe edge length of the unit cell is 408pmgiven that the
the d-d transition in tih2o63aq produces an absorption maximum at 500 nm what is the magnitude of for this complex in
the equilibrium constant kc for this reaction is 46 x 10 -3 n2o4gltgt2no2g if the equilibrium contains 0050 m no2 what
for the elements scandium through manganese what is the highest oxidation state equal to a none of the above b the
determine the ph of the solution containing 810-3 m each of hf and naf assume that naf dissociates completely acid
determine the freezing temperature of a 10 mm solution of formic acid faoh in water which also contains 25 mm na2so4
state the meaning of alpha and beta with regard to steroid structure and indicate whether the hydroxyl group on ring a
the overall reaction in the lead storage battery used in your car is pb s pbo2 s 2 h aq 2 hso4 - aq 2 pbso4 s 2
consider the reaction au3 aq 3 tl s aus 3 tl aq with ecell o 184 v if the reaction occurred at 25 oc determine the