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a) While 25mL of 0.10 mol/L HBr(aq) is titrated with 0.10 mol/L NaOH(aq), explain what is the pH at the equivalence point?
b) Choose an appropriate indicator.
You are given an unknown, colorless, solution that may contain only one salt from the following set: NaA, NaB, NaC. In solution each salt dissociates completely into the Na+ ion and the anion A-, B-, or C-. The Na+ ion is a spectator ion. Given th..
balance the following equationcus agno3aq ags cuno32aqs and aq in parantheses refers to the phase of the reactants
1.00 mole of an ideal gas (Cv,m=12.47 J mol-1 K-1) is initially at 300 K and in 10 L and is expanded to 20 L in two different ways described below. Compute w, q, deltaU, delta S, and delta S total for both of these two processes.
A flask contains 0.350 grams of liquid Br( bromine). calculate the number of (Br)bromine molecules present in the flask
nickel ion forms the complex ion hexaamminenickel (II) with a formation constant of(Kf) of 5.6 x 10 ^8. initially the complex is formed when .002 M nickel sulfate is added to .10 M ammonia.
how many milliliters of h2o vapor measured at 291. degc and 724. torr are formed when 49.0 ml of nh3 at 815. torr and
When 0.01 M Fe2+ solution and 0.10 M Fe2+ solution are separated by porous disk in the same beaker, calculate the cell potential at 298K.
Question : Explain and show how you would sythesise the following compounds, starting with benzene or toluene and any necessary acyclic reagents. Assume para is the major product.
Propose the structures for hydrocarbons that give the following products on oxidative clevage by potassium permanganate or ozone.
Compare and contrast the following: size exclusion chromatography and ion exchange chromatography. points to include would be methods of action used in both, examples of use for both, advantages and disadvantages and levels of sensitivity or detec..
what is the pressure in millimeters of mercury of 0.0105 mol of helium gas with a volume of 220 ml at a temperature of
A 1.00 L sample of gas, initially at 273 degrees C and 2.00 atm was cooled to 0 degrees C and the pressure changed to 0.20 atm. What is the final volume of the gas in liters?
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