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Consider an equilibrium mixture of four chemicals (A, B, C, and D) reacting in a closed flask according to the equation:A + B <--> C + D
a) You add more A to the flask. How does the concentration of each chemical compare to its original concentration after equilibrium is reestablished?
b) You have the original set-up at equilibrium, and add more D to the flask. How does the concentration of each chemical compared to its original concentration after equilibrium is re-established?
Sodium methoxide is a weaker base than butyllithium (the base commonly used in the Wittig reaction). Suggest a reason why a weaker base
a mixture of he ne and ar has a total pressure of 0.80 atm and is found to contain 0.55 mol he 0.94 mol ne and 0.35 mol
A stellar object is emitting radiation at 3.75 mm. If the detector is capturing 3.3*10^8 protons per second at this wavelength, what is the total energy of the photons detected in one hour
An oligomeric protein has a molecular weight of 168000. A 420 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene (Sanger\'s reagent) until the reaction was complete
How much rations must the hiker consume to avoid a reduction in body temperature of 4.0 K as a result of heat loss? Assume the heat capacity of the body equals that of water and that the hiker weighs 55 kg. State any additional assumptions.
A saline solution contains 171 mEq/L each of Na+ and Cl-. how many moles of each of Na+ and Cl- are in 1.50 L of the saline solution.
If 495g NaOH is dissolved in a final volume of 20.0 L, what is the molarity of the solution.
in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction
How many additional milliliters of titrant are needed to reach the first equivalence point of quinidine dihydrochloride. What is the pH at the first equivalent point
An aerosol can has a gas pressure of 144 kPa at 293 K. Calculate the pressure when the can is heated to 425 K.
Formic acid, HFor, has a Ka value equal to about 1.8 X 10^-4. A student is asked to prepare a buffer having a pH of 3.40 from a 0.10 M HFor and a 0.10 M NaFor solution. How many milliliters of the NaFor solution should she add to 20 mL of the 0.10..
Explain why C-H single bond stretching is observed in the functional group (higher energy) region of the IR, but the absorptions corresponding to other single bond stretching vibrations
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