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Problem- a) Sketch a graph of the van Deemter equation (plate height vs. linear flow rate). What would the curve look like if the mutliple path term were 0? If the longitudinal diffusion term were 0? If the finite equilibration time term were 0?
b) Explain why the van Deemter curve for 1.8?m particles is nearly flat at high flow rate.
c) Explain why the 2.7 ?m superficially porous particle enables separations similar to those achieved by 1.8 ?m totally porous particles, but the superficially porous particle requires lower pressure.
I just need a general explanation of it please- Thanks!
Complete the following potential energy diagrams for the formation of B and C by sketching the energy curve for each product. The diagrams are
To get an estimate of the number of beans in the jar you weigh six beans and obtain masses of 3.15, 3.12, 2.98, 3.14, 3.02, and 3.09 g . Then you weigh the jar with all the beans in it, and obtain a mass of 2082g . The empty jar has a mass of 6..
a molal concentration of 6.25 m has a density of 1.300 g/mL. What is the molar concentration of this solution?
How many grams of oxygen are collected in a reaction where 235 mL of oxygen gas is collected over water at a temperature of 25 ^circ {rm C} and a total pressure of 704 torr?
A reaction has a standard free-energy change of -4.78 kJ/mol at 25 degree C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively
How many absorptions would you expect to observe in the 13C NMR spectra of cyclohexanone
A dose of aspirin of 5.0 mg per kg of body weight has been prescribed to reduce the fever of an infant weighing 12.5 pounds (1.0lb = 454 g). The number of milligrams of aspirin that should be administered is
electrons as dots and showing all non bonding electrons for C2Cl4 tetrachloroethylene and CO2 carbon dioxide
One tablespoon of peanut butter has a mass of 15g. It is combusted in a calorimeter whose heat capacity is 130 kJ/degrees C. The temperature of the calorimeter rises from 22.4 degrees C to 25.2 degrees C.
The standard width between rails on North American and most European railroads is 4 ft 8 in. Calculate this distance in meters and centimeters.
Calculate the heat that must be supplied to 0.104g of Ne(g) at 0.250 atm to raise its temperature from 22.0 degree Celsius to 60.0 degree Celsius at
a solution of 100.0ml of .200 m koh is mixed with a solution of 200.00ml of .150m niso4.a write the balanced chemical
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