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The plate height in a particularly packed gas chromatography column is characterized by the van Deemter equation with parameters: A= 1.50 mm, B= 25.0 mm ml/min, and C = 0.0250 mm min/mL.
a) Please use spreadsheet to construct a graph of plate height versus flow rate (u in the unit of mL/min) and find the optimum flow rate for minimum plate height.
b) Also using the graph, please determine the appropriate range of the flow rate in order to achieve a plate height of 4.00 mm?
What will be the concentration of all species present, excluding water, when the reaction is at equilibrium?, c) What will be the pH., d) what will be the percent ionization
The test for Mg uses a selective complexing agent,titan yellow.Unlike many of the other metal species in this experiment which exhibit color due to electronic transitions by d electrons,Mg does not actually have any d electrons. can you suggest wh..
Is 1.39 at 400oC. Suppose that 1.4 mole of P4 (g) and 1.25 mol of P2(g) are mixed in a closed 25.0-L at 400oC. Determine the reaction quotient and the direction of the reaction.
If the sample contains a combined total of 1.75 grams per mole and has a total mass of 51.0 grams, what are the percentages of CO2 and Ne in the sample by mole?
What is the pH of 0.20 M NaCl 2. what is the pH of 0.20 M NH4NO3 3. What is the pH of 0.20 M NaCH3COO
Calculate the volume of a solution NaOH c=0.2 mol/l necessary to neutralize v=200 ml of solution HCl c=0.1 mol/l.
Determine the mass of lithium hydroxide producecd when 0.38 g of lithium nitride reacts with water according to the follow equation: Li3N + 3H2O equals NH3 + 3LiOH
The mass of a cube of iron is 338 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Calculate the number of molecules of AsCl3 that would be in 1 mL of Solution C at this concentration. Look at your answer. This is the average number per mL. But what is the most likely number (ie integer) of molecules of AsCl3 in 1 mL?
Question- Arrange the following in order of decreasing reactivity toward nitration. Fully explain and be clear in your answer(PLEASE). (a) acetanilide, (b) acetophenone, (c) bromobenzene, (d) toluene
The osmotic pressure of blood plasma is 28 mm Hg at body temperature at body temperature, 303 K. The quantity of plasma proteins present has been measured to be about 60 g/L.
Assume that all of the atoms fit together next to each other like placing tennis balls in a cardboard box. The second layer directly on top of the lower layer.
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