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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!
Determine the volume of SO2 (at STP) formed from the reaction of 96.7g of FeS2 and 55.0 L of O2 (at 398K and 1.20 atm). The molar mass of FeS2 is 119.99 g/mol.
How many moles of iron are required to react completely with 45.0 L of chlorine gas according to the following reaction at 0 degrees
Identify the major attractive force between each of the following atoms or molecules: a) He; b) HBr; c) SnH4; d) CH3-CH2-CH2-OH.
1770 mm hg and the temperature in your work area is 22.0c how many moles of co2 are in the flask? 2 how many grams of
A 25.0 mL sample of river water was titrated with 0.0010 M Na2Cr2O7 and required 8.3 mL to reach the end-point. What is the chemical oxygen demand, in milligrams of O2 per liter, of the sample?
How would the ground-state energy levels of X and H compare and would the energy of an electron in the n = 2 level of H be higher or lower than that of an electron in the n = 2 level of X? Explain your answer.
Household vinegar is aqueous 5.00% acetic and CHC2H3O2 SOLUTION(by mass), if the density is 1,01g/ml calculate the mole fraction, molarity and molality.
A soft drink contains 35 mg. of sodium in 316g. of H2O. What is the concentration of sodium in the soft drink in mass percent?
What are the electron configurations of the following metal ions: Fe3+, Zr4+ and Co3+. Draw a) the high-spin electron configuration for a complex containing Fe2+ and b) the low- spin electron configuration for a complex containing Fe2+. Assume an ..
Depict a simple schematic diagram of linear polyethylene and cross linked polyethylene. chemical structure of ethylene is CH2 = CH2.
Water, sodium hydroxide, and 1,6-hexanediamine are all potential nucleophiles. Yet, only 1,6-hexanediamine reacts with the adipoyl chloride. Offer an explanation as to why.
A solution is made that is 1.1×10^?3 M in Zn(NO3)2 and 0.150 M in NH3. After the solution reaches equilibrium, what concentration of Zn2+(aq) remains
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