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Choose an appropriate buffer system to make a buffer of ph=5.00. Calculate the appropriate composition in terms of the weak acid and conjugate base.
Technetium-99 is a long-live radioactive isotope of technetium. Each nucleus decays by emitting one beta particle. What is the product nucleus?
It only contains only C,H, and O. A 116mg sample was treated with an excess of methylmagnesium bromide, producing 48.7ml of methane gas at 20 degrees C and 750mm Hg.
At a temperature of 435C and a pressure of 715 mmHg, how many grams of NH3 can be produced when 4.50 L of NO2 react?
a mixture conntains two compound that absorbs strongly in the 300-600nm range the molar absorptivities of the two compounds at two wavelenghts in this range are shown in the table compound molar absorptivity at 400 nm mola..
a 100.0 ml aliquot of .200 M aqueous potassium hydroxide is mixed with 100.0 ml of .200 M aqueous magnesium nitrate. what mass of precipitate is formed? what is the concentration of each ion remaining in the soulution after the reaction is complet..
For a formaldehyde and bisulfite reaction, discuss in detail the effect of changing the concentration on reaction rate with respect to each reactant
What is the osmotic pressure of a homogenous solution at the temperature At 25 o C, as this solution is consisting of 21.0 g urea
compounds are dissolved in 1.00 L of w ater: 0.220 mol HA (K a = 1.36 x 10 - 3 ), 0. 18 mol NaA, 0.0 8 mol H 2 SO 4 , and 0.08 mol KOH . What is the pH of the resulting solution?
using a sample of river water sample analyzed for total inorganic carbon ,The river pH= 7.1 and an inorganic C concentration of 6.97 mg C/L.c
The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name and origin imply, it stinks!
How many mL of 12.0 M HCl should be added to 500 mL of 0.100 M Na2SO3 (Kb2 = 8.13 x 10-13 and Kb1 =1.5 x 10-7) to produce a buffer at pH of 7.00?
Predict the magnetic susceptibilities (para- or diamagnetic) and determine the number of unpaired electrons of each of the following complexes (consider C2O42- and H2O as strong field ligands which cause a large splitting of the d-orbitals).
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