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a cylinder contains 250 g of helium at 200 k the external pressure is constant at 1 atm there is an increase in
in a coffee-cup calorimeter 1 mol koh and 1 mol hbr initially at 235 oc celsius are mixed in 100g of water to yield the
a 324 g sample of lauric acid c12h24o2 a common constituent of fats is burned in a bomb calorimeter the temperature of
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a 065 g sample of fructose mw 180 gmol is burned in a bomb calorimeter that has a heat capacity of 269 kjoc the
how would i do this a lactic acidlactate ion buffer solution contains 22 m hc3h5o3 and 80 m c3h5o3- respectively the
what is the ph of a 03656 m solution of the sodium salt of a weak acid with a pka of 3745 the answer is not ph pka
the ksp for silver sulfate ag2so4 is 12 x 10-5 calculate the solubility of silver sulfate in each of the following a
the standard state of carbon is solid graphite use the appropriate standard heats of formation given in appendix ii in
the delta h sub f of febr3 is -269 kjmol and the delta h for the reaction 2fe s 3br2 g----gt 2br3 s is -631 kjmol
what two ways could you use to determine which layer is the organic layer and which is aqueous
describe how you would seperate a mixture containing acid and benzophenone a neutral substance both compounds are
explain how the electronic properties of an attached group can affect the rate of electrophilic aromatic substitution
a calorimeter contains 170 of water at 125 degrees celsius when 210 of a substance with a molar mass of 800 gmol is
the molar heat capacity of silver is 2535 how much energy would it take to raise the temperature of 102 of silver by
what is the ph of a buffer that results when 33g nahco3 is mixed with 100ml of 250 m naoh and diluted with water to
it takes 530 to raise the temperature of an 102 piece of unknown metal from 130 to 240 what is the specific heat for
which statement about the hybridized oxygen molecule in watersp3 hybridized oxygen is not correct the electrons remain
what is the normality of a 025m phosphoric acid solution question options 025n 050n 075n
which of the following is an experimental fact that valence bond theory cannot explain but molecular orbital theory can
calculate the ph of a buffer solution that contains 010 m nah2po4 and 050 m na2hpo4 the ka of h2po4- is 63 x 10-8