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dinitrogen pentoxide n2o5 decomposes by first-order process with a rate constant of 37 x 10-5 s-1 at 298ka what is the
in a 050 m hcl solution an indicator is not all in acid form for methyl orange what percentage of the indicator is in
if the observed wind speed by an anemometer is 5 ms what is the wind speed at 100 m height if the value of the index p
a buffering system in the blood is h2co3hco4 at the normal blood ph 74 a solution of h2co3 and hco3 will change the ph
a buffer solution was prepared by adding 495 g of sodium acetate nach3co2 to 0250 l of 0150 m acetic acid ka 175 x
a sample of 20 grams of ammonia was placed in a 250 ml container and heated to 300 degrees c after equilibrium was
you may be required to standardize a solution of na2s2o3 in this experiment the approximate molarity of this solution
how can 1-bromopropane be used to prepare each of the following a ethanalb propanonec propanald 2-butanonee
pikes peak in colorado is approximately 4300 m above sea level what is the boiling point of water at the summit and
when 232 ml of 011 m hcl are added to 500 ml of a 017 m solution of a weak monoprotic base the ph of the solution is
write the cell reaction for the combination of these half-cell reactions that leads to the largest positive cell
the naoh solution with a concentration of 188m is used to titrate a diprotic acid of unknown concentration 2500 ml of
a 284 g sample of c2h5oh is burned in a calorimetry containing 10 kg water the temperature of the calorimetry and its
to standardize a solution of naoh one uses a primary standard called potassium hydrogen phthalate khp it is a
what is the concentration of kmno4 when you mix 2 ml of 160 m kmno4 with 10 ml of 250 m oxalic acid assuming that it
sodium metal reacts with water to produce hydrogen gas and sodium hydroxide according to the chemical equation shown
determine the concentrations of the following ionic species present in a 0333 m solution of the diprotic acid h2so3 for
the change in the gibbs energy of a certain constant-pressure process as a function of temperature was found to fit the
the addictive painkiller morphine c17h19no3 is the principal molecule in the milky jiuce that exudes from unripe poppy
the size by thef an atom is sometimes considered to be measured by density of the radius of a sphere that contains 90
calculate the concentrations of hydroxide and hydronium ions in a solution prepared by dissolving 0308 g of solid naoh
why would the cell potential be higher with the addition of 6 m na2s solution to 001 m of cuso4 compared to 6 m nh
positronium consists of an electron and a positron same mass opposite charge orbiting round their common centre of mass
how many milliliters of 34 m nh4cl must be added to 250 ml of 023 m nh3 to obtain a buffer solution having
arsenic acid h3aso4 is a triprotic acid with ka1 5 10-3 ka2 8 10-8 and ka3 6 10-10 calculate h oh h3aso4 h2aso4