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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 = 75.0 cm. The column has N theoretical plates and the unadjusted relative retention is ? = 1.008.
A) Calculate the number of theoretical plates N in the column of length L in 20 cycles. The observed resolution is 1.81.
B) Now, calculate the plate height in the column in ?m.
C) Estimate the resolution in 4 cycles.
How many grams of P2O5 gas are present in a 750 ml container that is at 75 degrees C and at a pressure of 590 mm Hg?
3I2(s) + 2P(s) → 2PI3(s) What is the percent yield of the reaction if 28.3 g of phosphorus triiodide PI3 is obtained when 68.0 g of I2 and 68.0 g of P are mixed and allowed to react.
In the welding shop of the XYZ Manufacturing plant you have a cylinder with a volume of 548L of a compressed gas, and the pressure gauge shows 238 psig at the room temperature 25 C.
When a 17.0 mL sample of a monoprotic weak acid is titrated with 0.10 M KOH, it generates the titration curve shown. a) What is the molar concentration of the original sample of weak acid?
Determine the molarity of a saturated NaI Sodium iodide solution (aqueous) formed as twenty five degree Celsius
Estimate the value of the equilibrium constant at 610K for each of the following reactions. Delta Hf and S for BrCl is 14.6 kj/mol and 240.0 J/mol*K , respectively. Br2(g)+ Cl2(g) --> 2BrCl(g)
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke.
The iron-chromium voltaic cell utilizes the following reaction with a measured potential of 0.30 V. What is Î"G ° for this reaction?
If the mobile phase flow rate is 0.4 m/min, what is the analyte linear migration rate, and how long is the column?
The equation for a Beer's Law plot is y = 2012.5x + 0.003. If the recorded absorbance for an equilibrium mixture is 0.362, what is the concentration of FeCNS2+ (aq)?
Calculate the theoretical yield of C2H5Cl when 123g of C2H6 reacts with 213g of Cl2 , assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
A green leaf has a surface area of 2.10 cm^2. If solar radiation is 1150 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
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