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A buffer contains 0.19 mol of propionic acid (C2H5COOH) and 0.22 mol of sodium propionate (C2H5COONA) in 1.20L.
What is the pH of the buffer after the addition of 0.02 mol of HI?
How do I find the weight percent of each component in the original mixture and would this affect the outcome if Methanol had been used in place of the dichloromethane? Product weight of Oil: 0.11g & Product weight of Polypropylene Glycol : 0.19g.
The osmotic pressure of poly(methyl methacrylate) in tolune has been measured at a series of concentrations at 298 K. Determine graphically the molar mass of the polymer
at 520 degrees celius the equlibruim mixture in a three cubic decimeter container consists of 0.2 moles of h2 and 0.2 mole i2 , if the equlibrium contant is o.016, calculate the concentration of hyrdogen iodide at equlibrium HI.
In the IUPAC naming system, all alkanes end in the suffix ane and begin with a prefix determined by the number of carbon atoms in the molecule
consider an excited-state hydrogen atom. What is the energy of the electron in the n = 3 level? ground state energy
At what temperature in Celsius would the rate be 5.000 times faster than it is at 36.6 degrees Celsius for a reaction with an activation energy of 16,243 J/mol?
Hydrangeas are flowers that retain blue coloration when grown in acidic soil and pink when grown in neutral or alkaline soil
Calculate empirical formula of this compound & molecular formula and calculate the molality of solution of sulfuric acid?
A 15.00 mL sample of unknown concentration of sulfuric acid is precititated with excess lead(II) nitrate and a precipitate of lead(II) sulfate is collected.
Consider a 75.0g sample of H2O(g) at 125C. What phases are present when 215kJ of energy is removed from this sample?
An analysis of fatty acids is desired. These fatty acids have boiling points in excess of 275O C. The sample is extracted with methanol to obtain a solution that only contains the fatty acids.
At what temperature would a 1.20 M NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? K_f for water is 1.86 C/m
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