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Question- Find the initial concentration of the weak acid or base in an aqueous solution of pyridine (C5H5N) with a pH of 8.81. Kb=1.80x10^-9. Answer in units of mol/L.
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The following organic chemicals are used during the oxidation of 9-hydroxyfluorene to fluorenone briefly explain how each chemical listed below is taking part during the chemical reaction.
15.0 mL of 0.400 M Hno3 Solution is titrated with 0.600 M KOH solution . Calculate pH of the solution when12.0 mL of KOH is added ?
How would this computed ? compare with the dimensions of a typical atom? (-1 if much smaller, 0 if about the same magnitude, +1 if much bigger)
A 4.5-g sample of LiCl at 25 degrees Celsius dissolves in 25.0 mL of water also at 25.0 degrees Celsius. The final equilibrium temperature of the resulting solution is 60.8 degrees Celsius. What is the enthalpy of , H, of LiCl expressed in kilojou..
A sample of gas with a mass of 6.87g occupies 3.25L at STP. What is the molecular weight?
Explain how many grams of ammonia can be produced from the reaction between 73.52 g nitrogen and 63.80 g hydrogen? N2 + H2 -----> NH3
After 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the phosphours 32 ?
If liquid mercury as well as oxygen combine to make mercury(II) oxide, define what is the percent yield of HgO if 350.0 grams of Hg(l) react with 150.0 g of O2(g) to produce 272.3 grams of the product
A hypothetical Fresnium (Fn) is placed in a solution of 1 M fresnium nitrate, and a standard copper reference electrode is also placed in the solution.
Which of the following correctly describes Tollens' reagent? a. a solution of silver nitrate in water b. a solution of silver nitrate and ammonia in water c. a solution of silver nitrate in hydrochloric acid d. none of the above correctly describe..
The following questions pertain to the magnitude of the x-component of the speed(absolute value of the velocity) cx=|vx| of atoms in a gas, whose probability distriubution has the form P(cx)= ae^-bc2/x. A. Write down the integral you would need to ..
For an oxidation and reduction reaction, indicate what is oxidized and what is reduced in the following reaction.
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