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calculate the concentrations of acetic acid and sodium acetate necessary to produce a ph 55 solution that is 05 m in
a 500 ml sample containing ni2 was treated with 250 ml of 050 m edta to complex all of the ni2 and leave some excess
a 1000 ml aliquot of a dibasic compound with kb1 110-4 and kb2 110-8 was titrated with 100 m hcl calculate what the ph
the upper falls in yosemite national park at 440 m is among the 20 highest waterfalls in the world estimate the
how many ml of 0100 m hcl should be added to how many grams of sodium acetate dehydrate at 5 degrees celsius to prepare
an organic mixture weighing 2416 grams contains inert materials and benzoic acid the benzoic acid is extracted into
describe the effect of temperature on the stability of foods with glassy nature needs to be related to food
list factors that influence the size of ice crystals and corresponding methods to control the crystal
the time of diffusion of lighter gas is 2 and heavier is 3 if the mass of lighter one is 8 find out the mass of
give three examples of moisture diffusion and explain how to prevent moisture diffusion in each
1 water from a 5-ml pipet was drained into a weighing bottle whose empty mas was 9974 g to give a new mass of 14974 g
write a clear and complete answer to the following question your answer should be directed towards a first year
1 given that one can do 353 kj of work with both arms while lieing on a bench how high can you lift a mass of 90 kg2 a
the density of a sample of an unknown solid is 169 gcm3 convert this density to to units of
ribosomes have three trna bind sites what are they called describe the elongation phase of prokaryotic translation and
give a detailed description of the mechanism by the lagging strand of the double strand dna duplex is synthesised and
glucose makes up about 010 by mass of human blood calculate the concentration in ppm calculate the molality what
metabolic reactions are regulated by a variety of regulatory mechanisms mention and discuss five mechanisms give clear
discuss the breakdown of glycogen list all the enzymes and their roles in addition explain the regulation of the
in glycolysis nad is reduced to nadh this nadh must be reoxidised to allow glycolysis to continue there are various
the viscosity of hcl g at 27315 k and 1 atm is 00131 centipoise calculate the hard sphere diameter of an hcl
a first-order reaction has rate constants of 46x10-2s-1 and 81x10-2s-1 at 0 degrees and 20 degrees c respectively what
naturally occurring chlorine is composed of two isotopes 7576 cl-35 mass 349688 amu and 2424 cl-37 mass 369659 amu
how many ml of 50 wt sodium hydroxide must be added to water to prepare 500 ml of a 0400 m solution of sodium hydroxide
if the internal ph of muscle cell is 680 what is the hpo42-h2po4- ratio in this cell the values are pk1212 pk2721 and