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you obtain the following six measurements for the mass of water delivered by a special calibrated volumetric pipette
use a table listing the ordinate and area for the normal or gaussian distribution error curve to find the fraction of a
the normal boiling point of a liquid is 62 c and it has aheat of vaporization of 325 kjmol what is the vapor pressure
when the body metabolizes glucose water and carbon dioxide are produced according to the following equationc6h12o6 6
a solution contains barium nitrate and ammonium chloride which of the following reagents would separate the two cation
determine the total concentration in moll of cl- ions in a solution formed from the reaction of 500ml of 10m barium
which of the following reagents could be used to separate the two anions in a solution of sodium sulfide and sodium
determine the total number of moles of solid sodium hydroxide required to react with 67800ml of 04500m phosphoric acid
1 they help position the reactant molecules to facilitate the reaction2 they make electron transfer proceed more
the double helix of dna is partially held together with hydrogen bonds between the complementary bases a with t and g
a second-order reaction required 538s for the concentration to drop from 050 m to 036 m what is the value of the rate
which of the following would act as a nonelectrolyte when dissolved in water select all that applya nh4no3b naclc
oxalic acid h2c2o4 is a useful primary standard for standardizing solutions such as potassium permanganate kmno4 in a
a polypeptide chain is a linear polymer of l-amino acids when a polypeoptide chain adopts its mature 3d structure it
a 9445g sample of a mixture of cuso4 5h20 and bacl2 2h20 is found to have excess so42- ion upon mixing with water and
draw the structure of the organic product formed from the reaction of sodium methoxide with 1-chloro-4-nitrobenzene add
the percent composition by mass of a compound is 400 carbon 530 oxygen and the rest is hydrogen find the empirical
nitrobenzene can be nitrated with a mixture of nitric and sulfuric acids draw the product that contains two nitro
the freezing point of a 0975 mass percent aqueous nacl solution is measured to be -0506 degrees celcius what is the
an unknown sample 07844g containing khp is titrated to the equivalence point with 92ml of 00811m naoh how many moles of
the water solubilities of oxalic acid and sodium oxalatte at room temperature are 10 g100 ml and 37g100ml respectively
a compound of elements x and y has the molecular formula x2y3 let mx be the atomic mass of element x and my subscript-y
the rate constant of a reaction is 53510-5 lmols at 195 c and 690103 lmols at 258 c what is the activation energy of
sulfur dioxide gas reacts with oxygen gas to form sulfur trioxide gas my answer was 2so2o2