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a 2158g vitamin c tablet was analyzed for ascorbic acid content 1785g of the tablet was used to make 100ml of solution
calculate the cell potential ecell of an electrochemical cell with mgmg2 and fefe2 electrodes mg2 0200 m and fe2 0050
what is the ratio between hco3- and hco3h to produce a buffer with a ph of 65 ka of hco3h is 794 x
a 0233 g sample of an unknown monoprotic acid was titrated with 0105 m koh and the resulting titration curve is shown
1 calculate delta u of a gas for a process in which the gas absorbs 3 j of heat and does 10 j of work by expanding2
predict the equilibrium constant for the 1st reaction given the equilibrium constants for the 2nd and 3rd reactionsco2g
find the value of kc for the reaction 2 ch4g lt--gt c2h2g 3 h2g at 1700 degc if the initial ch4 0115 m and the
if a temperature increase from 10 degc to 30 degc doubles the rate constant for the reaction what is the value of the
a first order reaction has a half life of 264 sec how long will it take for the concentration of the reactant to fall
the first order decay of radon has a half-life of 3 days how many grams of radon remain after 722 days if the sample
consider the neutral form of the amino acid histidine a when the neutral form of the amino acid histidine ha is
in the first step mnoh2 s is oxidized by gaseous oxygen to mnoh3 s in basic aqueous solution write the oxidation and
elemental manganese and manganese dioxide mno2 in a state of high purity can be prepared by electrolyzing aqueous
1 according to the equation shown below how many grams of oxygen are required to react with 90 grams of c2h62 c2h6 7
what is the name and the geometric isomers structure of cis and trans of this coordination compound
the pressure inside a particular 500 l bottle of gas must be 1 atm or less in order to open the bottle cap to what
using the cahn-ingold-prelog sequence rules assign priorities to the groups around the chiral carbon in carvone draw
decide whether or not each of the following metals dissolves in 1 m for these metals that do dissolve write a balanced
use hesss law and measure the mean enthalpy changes for the naoh-hcl and nh3-hcl reactions to calculate the enthalpy
a man has 50 kg of lipids and eats 1 kg of fish a day which contains 05 ppm of methylmercury what concentration of
bioremediation is the process by which bacteria repair their environment in response for example to an oil spill the
an avergae 70-kg adult human contains 170g of potassium 00118 of naturally occuring potassium is potassium-40 which is
calculate the total amplitude of the normalized bonding and antibonding that form from the two h1s orbital at a
what is the ph after 450ml of 1m hcl is added during the titration of 300ml of 01 mweak base that has a kb52
calculate the ka of an unknown monoprotic acid when 15ml of the acid was titrated with 28 ml of 015m sodium hydroxide