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A certain inorganic cation has an electrophoretic mobility of - 2 4 cm 4.31 10sxV. Thissame ion has a diffusion coefficient of - 26 cm 9.8 10sx . If this ion is separated from other cations by CZE with a50.0 cm capillary, what is the expected plate count N at applied voltages of
a) 5.0 kV
b) 10.0 kV
c) 30.0 kV?
Calculate the pressure when the volume is 1.27 L and the temperature is 3.00 × 102 K.
in a coffee-cup calorimeter 1.80 g of nh4no3 is mixed with 75.0 g of water at an initial temperature of 25.00degc.
Question- How many grams of urea must be added to 658g of water to give a solution with a vapor pressure 2.50 mmHg lower than that of pure water at 30 C
A misture of .25 mol N2 an d .60 mol H2 are placed in a 1.0 L evacuated flask at 300 degrees Celcius and it is then allowed to reach equilibrium. If the equilibrium misture contains .45 mol H2, what is the equilibrium constant for reaction
The rate constant for electron transfer between V 2+ (aq) and V 3+ (aq) is observed to depend on [H+]: k = a + b/[H+], where a and b are constants. Propose a mechanism and express a and b in terms of the rate constants in your mechanism.
A buffer solution is prepared by adding 0.20 mole of NH3 and 0.30 mole of NH4Cl to enough H2O to make one liter of solution.
Calculate how wide is the cloud of organisms at the time peak concentration takes place at the intake pipe.
Problem- When 2.00 mol of SO2Cl2 is placed in a 2.00-L flask at 305K , 55% of the SO2Cl2 decomposes to SO2 and Cl2: SO2Cl2(g)?SO2(g)+Cl2(g). Calculate Kc.
How many molecules of acetylene (HCCH) react with 123 molecules of oxygen to produce carbon dioxide and water.
Find the temerature at which water boils on a day in the mountains when the barometric pressure is 593 mmHg. (Gien the heat of vaporization of water is 40.79 kJ/mol).
The rate constant of some reactions double with every 10 degree rise in temperature. Assume that a reaction takes place at 295 K and 305 K. What must the activation energy be for the rate constant to double as described?
the three isomers 0-,m-, and p-xylenes are are very difficult to distinguish via proton NMR. However they are instantaneously distinguishable via carbon NMR how. What do you expect to see for each
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