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Calculate the pH at the equivalence point for the titration of 0.10 M HCl with 0.10 M NH3 (Kb = 1.8 x 10-5).
the reaction must progress forward to attain equilibrium. The richer a reaction mixture is in product the higher its Q value is. The value of K does not change as a reaction progresses toward equilibrium.
how many grams of ethylene glycol must be added to 700g of water to yield a solution that will freeze at -8.5 degrees Celsius?
The bromocresolgreen end point of the titration was reached after the addition of 30.00mL of hydrochloric acid solution. Calculate the concentration of the acid solution
a mixture of gases with a pressure of 800.0 mm hg contains 60 nitrogen and 40 oxygen by volume. what is the partial
The following three solutions are mixed: 90.0mL of 0.110M Na2SO4 , 45.0mL of 0.250M ZnCl2 , and 100.0mL of 0.20M Ba(CN)2. What ionic compounds will precipitate out of solution? Express as a chemical formula.
What are the energies of the lowest five energy levels in a 3 dimensional box where a=b=c and the degeneracy of each level
Suppose you were given a pure stereoisomer that rotated the plane polarized light either +60 degrees or -120 degrees, i.e a uniform colour is observed for both of these readings.
For the titration of 87.95 mL of 0.1311 M NaOH with 1.2586 M HBr, find the pH equivalence point (ve) in mL of the solution within the receiving flask when 0 mL of HBr is added.
one hundred grams of water is saturated with NH4Cl at 50 degrees celcius. According to table G if the temperature is lowered to 10 degrees celcuis what is the total amount of NH4Cl that will precipitate.
A freshly prepared sample of curium-243 undergoes 3312 disintegrations per second. After 6.00 years, the activity of the sample declines to 2755 disintegrations per second. Calculate the half-life of curium-243. half-life
Balance the following redox equation in acid: VO2^+(aq) +Zn(s) --->VO^2+(aq)+Zn^2+(aq)
A cylindrical vessel with rigid adiabatic walls is separated into two parts by a frictionless adiabatic adiabatic piston. Each part contains 50.0L of an ideal monatomic gas with Cv = 3R/2. Initially, Ti = 325K and Pi = 2.50x10^5 Pa in each part.
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