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Two peaks on chromatogram have retention facetors k1= 4.1 and k2=5.9. Column efficiency is 2000 theoretical plates, Void volume is 1mL. Calculate the resolution between these compunds.
A student prepares a buffer by dissolving solid sodium acetate, NaCH3COO, in a solution of acetic acid, CH3COOH. Write the net ionic equation for the buffer system.
In the combustion reaction of 149 g of propane with excess oxygen, what volume of carbon dioxide if produced at STP?
Final temperature after urea dissolves in water, What is the final temperature of the solution in kJ? The density of water is 4.18 J/g·°C. What is the final temperature in °F? F = °C x 1.8 + 32 (Round your answer to one decimal place)
Bulb B has 0.4 mole of ideal gas B at a pressure of 3 atm and is at 100 C. Calculate the final pressure of gas A when the two bulbs are open to each other.
mass is obtained in the reaction, what mass of S2O3^2- was present initially, assuming the reaction went to completion? the density of the HSO3^- solution is 1.45 g/cm^3
To 1.00 L of a 0.100 M aqueous solution of benzoic acid (C6H5COOH) is added 1.00 mL of 12.0 M HCl. What is the percentage ionization of the benzoic acid in the resulting solution? [Ka(C6H5COOH) = 6.5 × 10-5]
Compute the molarity of a solution prepared by dissolving 15.2 grams of CaCl2 in H2O with a solution volume equal to 5.00 x 10² millimeters.
If a 220 piece of gold (density =19.32 ) is hammered into a sheet measuring 2.41.0 , what is the average thickness of the sheet in meters?
How many circular clarifers will be needed if each one is 90 ft in diameter and the surface overflow rate must be less than 575 gal/ft^2/day at the average daily flow rate?
A 25.0 g sample of pure iron at 91°C is dropped into 57 g of water at 15°C. What is the final temperature of the water-iron mixture?
What would the pH of a raindrop be if the concentration of CO2 increases to 600 ppm at 20 degrees C? Show all steps.
A 500.0 g sample of aluminium is initially at 25.0 °C. It absorbs 32.60 kJ of heat from its surroundings. What is its final temperature, in °C? (specific heat = 0.9930 J g-1 K-1 for aluminum)
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