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two isotopic compounds are produced in the synthesis of a new therapeutic drug which must be separated by repeated chromatography cycles. In each cycle, the solution containing both compounds must pass through a chromatography column with a length L = 80.0 cm. The column has N theoretical plates and the unadjusted relative retention is ? = 1.014. Calculate the number of theoretical plates N in the column of length L in 17 cycles. The observed resolution is 1.51.Now, calculate the plate height in the column in ?m.Estimate the resolution in 2 cycles
Show the reaction equation for when sodium carbonate is added to acetic acid Show the reaction equation of acetic acid and dilute sulphuric acid. Potassium manganate is also added.
At room temperature (20), milk turns sour in about 65 hours. In a refrigerator at 3, milk can be stored three times as long before it sours. What is the activation energy of the reaction that causes the souring of milk?
Compute the amount of heat essential to fully sublime ninety grams of solid dry ice (CO 2 ) at its temperature of sublimation if it is given that the heat of sublimation for CO 2 = 32.3 kj/mol express your answers in kilojoules?
If 10 grams of an organic layer is extracted with an additional amount of fresh water, how much benzoic acid would be present in the organic layer
Calculate the final temperature of 34mL of ethanol initially at 20celcuis upon absorption of 739 J of heat. (density of ethanol =0.789g/mL )
An ice cube of mass 9.0 is added to a cup of coffee, whose temperature is 85 and which contains 110 of liquid. Assume the specific heat capacity of the coffee is the same as that of water.
Microwave ovens heat food by creating microwave electromagnetic radiation that is absorbed by water molecules in the food. Any material that does not have water in it will not absorb the radiation and will not get hot.
A reaction mixture initially contains 2.8 M H2O and 2.6 M SO2. Determine the equilibrium concentration of H2S if Kc for the reaction at this temperature is 1.3 × 10-6.
the heat capacity of the calorimeter has been determined to be 24.0J/degreeC. if the temperature of the system increases by 6.0C what is the heat generated(qrxn) by the reaction?
A compound containing only carbon, hydrogen, and oxygen is subjected to elemental analysis. Upon complete combustion, a 0.9294-g sample of the compound
The average concentration of sulfate ion in seawater is 2710 mg of sulfate ion per kg of seawater. What is the molarity of the sulfate ion if the density of the seawater is 1.025 g/mL?
If an aqueous solution has a hydronium ion concentration ([H3O+]) of 5.10 x 10-9 mol/L, what is the hydroxide ion concentration ([OH-]) in the solution
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