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if 88 mg of iodine-123 is used in an experiment how many milligrams of iodine-123 should remain after 50 hours assume
gaseous oxygen is held in two separate containers at identical temperature and pressure the volume of container a is
a 200 ml sample of hypobromous acid hbro was titrated with 0180 m koh to reach the equivalence point required 2775 ml
the ksp for aloh3 is 1910-33 what is the ph of a sauturated solution of aloh3 ignore any
the initial temperature of a 344 g sample of iron is 182 deg c if the sample absorbs 225 kjof energy as heat what is
a calculate the h3o of a solution that has an oh of 0000 0060m is the solution acidic basic or neutralb calculate the
a solution was prepared by dissolving 0450 g mgso4 fw120363gmol in 0500l of water a 500 ml aliquot of this solution
arsenic acid h3aso4 is a triprotic acid with a ka15e-3 ka28e-8 and ka36e-10 calculate h oh- h3aso4 h2aso4-haso4 2- and
in a qualitative analysis procedure a chemist adds 02 m hcl to anunknown group of ions and then saturates the solution
after carrying out the reaction why does a precipitate solid form when you pour the reaction mixture on
a solution is made that is 1510-3 m in znno32 and 0130 m in nh3 after the solution reaches equilibrium what
calculate the ph of a solution containing 0085m nitrous acid ka 45 x 10-4 and 0100m
if the ka for the acid phenol call it hp is 13 x 10-10 what is the pka of the phenolate ion
niacin is one of the b vitamins and it acts in solution as a weak acid call it hn if a 200 x 10-2 m of hn is prepared
a solution of nh4cl is prepared and its molarity is 100 x 10-3 what is the ph of this
a 001m solution of acid has has a ka16 x 10-10 and a concentration of naas of 129 x 10-3 molar a what is the ph of this
will b-myrcene and allo-ocimene structures not form diels-alder adducts with maleic anhydride explain why in each
consider the acid hb with a ka58 x 10-10 a what is the kb for the b- ion and b what is the
the side rection most often encountered in diels-alder syntheses is dimerization in which the diene also acts as a
how many moles of nabro should be added to 1 l of 0200 m hypobromous hbro acid to obtain a buffer of ph 880 assume no
the solubility of alf3 is 67 g alf3 per liter of solution the density of a saturated alf3 solution is 10 gml the ksp of
a compound cn is a weak organic base a 350 x 10-2 m solution has a ph 113 calculate the kb for cn the reaction is
a calculate the h3o of a solution that has an oh- of 0000 0060m is the solution acidic basic or neutral show answer in
the compound ca3po42 has a ksp of 20 x 10-29 if the phosphate ion concentration is adjusted to a value of 25 x 10-2
a 0050 m cacl2 solution is adjusted to a ph 8 will caoh2s precipitate show all