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An open tubular column with a diameter of 201 ?m and a stationary phase thickness on the inner wall of 0.76 ?m passes unretained solute through in 65 s. A particular solute has a retention time of 403 s. What is the partition coefficient for this solute?
Write balanced chemical equations and Ksp expressions for each of the salts as part of your solution.
A conducting sphere of radius 10 cm has an unknown charge. If the electric field 20 cm from the centre of the sphere is 1.5 × 103 N/C and points radially inward
Which of the following cannot act as a Brønsted-Lowry base in an aqueous solution? a) ammonia, NH3 b) acetate ion, CH3CO2-
How many grams of steam at 105 degree celcius must be mixed with 25g of ice at -15 degree celcius in an adiabatic calorimeter with a heat capacity of zero in order to produce a final mixture
Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
Compute the pH of a solution made by mixing 67 grams of sodium acetate, NaCH 3 COO, to 37 g of acetic acid, CH 3 COOH, and dissolving in H 2 O to form 300. mL of solution ?
Calculate the molarity of a solution of glycerol made by dissolving 46.000 mL glycerol at 15 ^circ {rm C} in enough water to make 400.00 mL of solution.
27.5 grams of hydrogen chloride is dissolved into 70.0 ml of water. Calculate the mole fraction for the hydrogen chloride that is dissolved in the water.
A 0.7549g sample of a pure hydrocarbon burns in oxygen gas to produce 1.9061g of carbon dioxide and 0.3370g of water.
write the equations for two different acid base reactions of diethylamine with water. Indicate the direction of the equlibrium for both reactions. The pKa of diethyl ammonium ion is 10.94.
Determine the empirical formula of the amino acid, given an amino acid which consists of the elements carbon, hydrogen, nitrogen, and oxygen.
Minimal energy cost of H2S conversion to hydrogen and sulfur in gliding-arc is 1.6 eV/molec
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