Decreasing mobile phase velocity

Assignment Help Chemistry
Reference no: EM13693597

Problem- Explain how peak width changes in the following conditions: (a) decreasing mobile phase velocity, (b) increasing particle size of packed column, (c) decreasing diameter of FSWC, (d) increasing coating film's thickness in WCOT.

I am stuck in between this question please help me out

Reference no: EM13693597

Questions Cloud

What is the calcium ion concentration in a solution : Problem- What is the calcium ion concentration in a solution prepared by mixing 341 mL of 0.425 M calcium nitrate with 441 mL of 0.335 M sodium fluoride? The Ksp of calcium fluoride is 3.2 × 10-11
What is the ksp of the salt at 22 °c : Problem- At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.56. What is the Ksp of the salt at 22 °C
How many grams dry of nh4cl need to be added : Problem- How many grams dry of NH4Cl need to be added to 2.50L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has pH of 8.55? Kb for ammonia is 1.8 x 10^-5
When the mobile phase flow rate increases : Problem- Explain when the mobile phase flow rate increases in a Van Deemter curve, how do the A, B, C terms affect the chromatography resolution
Decreasing mobile phase velocity : Problem- Explain how peak width changes in the following conditions: (a) decreasing mobile phase velocity, (b) increasing particle size of packed column, (c) decreasing diameter of FSWC, (d) increasing coating film's thickness in WCOT.
Analyze element composition in a molecule : Problem- Explain which LC (Liquid Chromatography) detector (a) can detect temperature change , (b) has highest sensitivity, (c) can detect halogen existence, (d) can be used to identify sulfur content in car's emission gas, (e) and can analyze ele..
Explain how industrial hygiene principles : Problem- Industrial hygiene principles can be applied to both the workplace and the general community. Explain how industrial hygiene principles are applied in the general community. Provide examples.
Predict the signs of dh, ds and dg of the system : Problem- Predict the signs of DH, DS and DG of the system from the following process at 1 atm (normal melting point of ammonia is -77.7°C): a) Ammonia melts at -60°C
What is the energy of an incident photon : What is the energy of an incident photon that is just enough to excite a hydrogen atom from its ground state to its n = 4 state

Reviews

Write a Review

Chemistry Questions & Answers

  What is the final temperature of the water and zinc

A 19.0 kg piece of zinc at 67 degrees Celsius is placed in a container of water. The water has a mass of 23 kg and has a temperature of 9.4 degrees Celsius before the zinc is added. What is the final temperature of the water and zinc?

  How many grams of each product would be produced

HCl + NaOH = NaCl + H2O If 200 mL of a .20 M HCl solution is consumed in the above reaction, how many grams of each product would be produced.

  Depict three six-carbon alkenes

Draw three six-carbon alkenes, each of which forms the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide,

  What is the rate constant for this reaction

The reactant concentration in a first-order reaction was 6.70×10-2 after 25.0 and 3.30×10-3 after 100 . What is the rate constant for this reaction?

  Compute the amount of calcium carbonate

The average pH of precipitation in rural areas is 5.80. Assuming that the pH is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere.

  What is the total pressure in the flask

A 1.20 gram sample of dry ice is added to a 755mL flask containing nitrogen gas at a temperature of 25.0 degrees Celsius and a pressure of 725 mmHg. The dry ice is allowed to sublime and the mixture is allowed to return to 25.0 degrees Celsius. wh..

  Define what is the enthalpy of formation of co(g) in kj

What is the enthalpy of formation of CO(g) in kJ. 2CO(g) + O2(g) --> 2CO2(g). H reaction = -566 kJ ; ?H CO2(g) =-393.5 kJ/mol.

  Explain the ph of the solution in the cathode compartment

What is the pH of the solution in the cathode compartment of the following cell if the measured cell potential at 25 degrees C is 0.51V

  Explain is the mole percent of co2 in the product stream

A stream of air (21% O2 m, the rest N2) flowing at a rate of 10.0 kg/h is to be mixed with a stream of CO2 inside a mixer. The CO2 enters the mixer at a rate of 20.0 m/h at 150 ?C and 1.5 bar. What is the mole percent of CO2 in the product stream

  How could the bomb have been detonated

What actions should an exposed person take during the immediate aftermath of the explosion?

  Define what is the ph of a solution made

What is the pH of a solution made by adding 8.80 grams of Sodium Acetate to 450mL of .105 M hydrochloric acid?(Assume no change in volume takes place)

  Which compound has the smallest molar mass

Which compound has the smallest molar mass?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd