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You require 36.75 mL of 0.0105M HCl to reach the equivalence point in the titration of 25 mL of aqueous ammonia, NH3.
(a) What was the concentration of NH3 in the original ammonia solution?
(b) What are the concentrations of H30+, OH-, NH4+ at the equivalence point?
(c) What is the pH of the solution at the equivalence point?
2 components mixture give the tlc shown when 1:1 mixture of hexanes:ethyl acetate is used as the developing solvent which components is more polar and how can you tell?
What amount of energy would be released upon formation of a mole of 28Si nuclei from their subatomic particles?
solution of an unknown acid has a ph=1.776. What is the value of acid dissociation constant?
Given the reaction: 2Al + 3H2SO4 -> 3H2 + Al2(SO4)3 what would be the total number of moles of H2SO4 needed to react completely with 5.0 moles of Al ?
Determine the mass of solid sodium formate of MW 68.0 must be combined to 150 mL of 0.66 mol/L
Two components have boiling points of 130 C and 150 C. Estimate the number of theoretical plates needed to separate these substances in a fractional distillation.
sulfate dissolves as follows: Na2SO4(s) → 2Na+(aq) + SO42- (aq). How many moles of Na2SO4 are required to make 1.0 L of solution in which the Na concentration is 0.10 M?
How many moles of photons with a frequency of 1.22e14 hz are necessary to produce
the air is at a standard temperature and pressure, how many gaseous molucules does the flas contain
draw the major form of your drug whenph is low (acidic medium) for all acid base groups c. draw the major form of drug when ph is high (basic medium for all acid base groups
Write the decayreaction for this isotope and explain your prediction in terms of N/Zratio.
should steam distillation be considered as a method of isolation and purification of an organic liquid that has a vapor pressure
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