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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 1.8μm particles is nearly flat at high flow rate.
c.) Explain why the 2.7 μm superficially porous particle enables separations similar to those achieved by 1.8 μm totally porous particles, but the superficially porous particle requires lower pressure.
(a) An electroplating solution is made up of nickel(II) sulfate. How much time would it take to deposit 0.500 g of metallic nickel on a custom car part using a current of 3.00 A
An aqueous CaCl2 solution has a vapor pressure of 82.1 mmhg at 50 C . The vapor pressure of pure water at this temperature is 92.6 mmhg What is the concentration of in mass percent?
A current of 0.0100 A is passed through a solution of rhodium sulfate, causing reduction of the metal ion to the metal. After 3.00 h, 0.038 g of Rh has been deposited. What is the charge on the rhodium ion, Rhn+? What is the formula for rhodium su..
How many structures can be drawn from C4H10O and how can you differentiate the molecules in a labratory
a rectangular block of plastic measuring 1.34 cm by 2.27 cm by 1.39 cm floats in the middle of the pacific ocean. the
This indicates that the solution is now more acidic, and the reaction shifts to the right, working to lower the concentration of hydrogen ions, and return to equilibrium
What is the heat of neutralization per mole of HCl? Assume that the original solutions made independent contributions to the total heat capacity of the system following their mixing. ( in kJ/mol)
Equal masses of water and ethylene glycol are mixed. What is the concentration of ethylene glycol in units of molality? The molar mass of water and ethylene glycol are 18.02 g/mol and 62.07 g/mol, respectively.
Calculate the number of molecules inside the cell, which is 2.2 ?m long and 1.2 ?m in diameter.
A compound has the empirical formula CHCl. (Note: the last element is chlorine.) A 256.0mL flask, at 373K and 750mmHg, contains 0.80g of the gaseous compound. Find the molecular formula of the compound
You set off from the bottom of the pile in a space craft that can travel at the speed of light (3.00 x 10^8 m/s). How long, in years, will it take you to reach the top of the pile of pennies? Show all work.
calculate the minimum volume of distilled water in liters necessary to completely dissolve a 7.5 g sample of agbr s at
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