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acid rain with a ph as low as 15 has been recorded in west virginia what is the h3o concentration in this acid rain and
a titration is carried out to determine the concentration of the acid in an old bottle of aqueous hcl whose label has
how many milliliters of 0100m naoh are required to neutralize 850ml of 0250m h2so4 the balanced neutralization
titration of a 100ml solution of koh requires 220ml of 00310m h2so4 solutionwhat is the molarity of the koh
how many minutes will it take to electroplate 141 g of gold by running 500 a of current through a solution of
which of the following processes are spontaneous select all that apply a a satellite falling to earthb water
consider the titration of 800ml of 0100m baoh02 by 0400 m hcl calculate ph of the resulting solution after 200ml of hcl
what volumes of 050m hno2 and 050m nano2 must be mixed to prepare 100l of a solution buffered at
a buffer is prepared by dissolving honh2 and honh3no3 in some water write equation to show how this buffer neutralizes
carbonate buffers are important in regulating the ph of blood at 740 if the carbonic acid concentration in a sample of
what is the concentration of hydroxide ions in pure water at 30 degrees if kw at this temperature is 147 x
for an enzyme that displays michaelis-menten kinetics what is the reaction velocity vas a percentage of vmax observed
calculate the nuclear binding energy for 5525 mn in megaelectronvolts per nucleon
write a balanced redox equation for the seperation of cu2 from the other qual 1 cations the other cations are na k
compare the structures of amino acids dipeptides polypeptides and proteins which has the largest molecular mass the
the restriction enzyme ssti cuts phage dna at positions 24472 and 25877 draw a picture of the gel you will see if it is
calculate the amount of heat required to raise the temperature of 2500 g of water from 25 c to 100c calculate the
a fossil was analyzed and determined to have a carbon-14 level that is 420 that of living organisms how old is the
when solid ammonium chloride nh4cl is added to excess water a solution forms and the temperature of the system
calculate the ph of a 017 m aqueous solution of ammonium chloride nh4cl at 25degc assume that kb for ammonia nh3 is
at what point during a titration of a weak acid with a strong base does the ph pka what ratio would cause ph gt pka
what is the volume required of a 02 m koh solution to reach the half equivalence point in titrating 25 ml of a 01 m
what is the ph of a buffer that is 050 m nh3 pkb 475 and 020 m nh4cl after 50 ml of 02 m hcl is added to the 1 l
73 mol of helium are in a 18 l cylinder the pressure gauge on the cylinder reads 67 psi what are a the temperature of
in black-and-white film developing excess agbr is removed from the film negative by lsquohypo an aqueous solution of