A chromatography and develops in dichloromethane as solvent

Assignment Help Chemistry
Reference no: EM13238703

A student placed in an unknown sample plate thin layer chromatography and develops in dichloromethane as solvent. only there is a spot whose Rf is 0.95. This indicates that the unknown material is a pure compound? Not be a pure compound, suggest an alternate procedure to verify the purity of the sample

Reference no: EM13238703

Questions Cloud

Define what is the new volume of the air : A 4.0L sample of air collected at 298 K and then cooled to 278F while held at constant pressure. What is the new volume of the air
Explain nucleic acids and where each is found in the cell : Name the two types of nucleic acids and where each is found in the cell. Also include the four bases particular to each nucleic acid.
State the efficiency of separation ignore the recommendation : Chromatographic column, it is important to let the level drop in the column eluent to the level of the sand before applying the solution of the compound to be separated. What effect would have on the efficiency of separation ignore this recommenda..
What is the speed of ship a as seen by ship b : Ships A and B leave port together. For the next two hours, ship A travels at 40.0mph in a direction 20.0 ?west of north while the ship B travels 45.0, What is the speed of ship A as seen by ship B
A chromatography and develops in dichloromethane as solvent : This indicates that the unknown material is a pure compound? Not be a pure compound, suggest an alternate procedure to verify the purity of the sample
When decreases the average selling price of the phones : Revenue at a major cellular telephone manufacturer was $1.4 billion for the nine months ending March 2, up 97 percent over revenues for the same period last year. Management attributes the increase in revenue to a 137 oercent increase.
Explain diagram a thiol cleavage reaction of butene : Diagram a thiol cleavage reaction (using expanded structural formula) of butene. Be sure to include all the possible product(s) formed. Name the product(s).
Explain the new electron configuration of neon : Assuming that all the other quantum numbers can take only the values possible in our world and that the Pauli esclusion principle applies, give the following.
What can one say about the price elasticity of demand : Suppose the price of widgets falls from $7 to $5 and consumption of widgets rises from 15 widgets a month to 25. Calculate your price elasticity of demand of widgets. What can one say about the price elasticity of demand of widgets

Reviews

Write a Review

Chemistry Questions & Answers

  State mixture heterogeneous and mixture homogenous

Which term or terms could be used to describe this sample of gold? Check all that apply. mixture heterogeneous mixture homogenous mixture solution pure chemical substance compound element

  How many grams of caffeine were in the sample

Caffeine, C8H10N4O2, is a stimulant found in tea and coffee. A sample of the substance was dissolved in 41.5 g of chloroform, CHCl3, to give a 0.0940 m solution.

  Determine the mechanism for the synthesis

Determine the mechanism for the synthesis of p-nitroacetanilide from acetanilide and HNO 3 , nitric acid and H 2 SO 4 sulfuric acid?

  Calculate the density of the solid

A 32.65-g sample of a solid is placed in a flask.  Liquid toluene, in which the solid is insoluble, is  added to the flask so that the total volume of solid and  liquid together is 50.00 ml.

  What will the volume of the balloon

A helium balloon at a high altitude has 2.1 × 104 L of helium at 0.40 atm and -13°C. If the balloon descends to an altitude in which the atmospheric pressure is 1.00 atm and the temperature is 20°C.

  Define how many rads does the person receive

A 68-kg person exposed to thorium-234 receives 5.0x10^4 B particles, each with an energy of 3.0x10^-14 J. How many rads does the person receive?

  Compute the acid-dissociation equilibrium

standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant

  What is the specific heat capacity of the metal

A piece of metal of mass 20 g at 99?C is placed in a calorimeter containing 55.8 g of water at 23?C. The final temperature of the mixture is 30.4?C.

  Determine the freezing point of pure camphor

the freezing point of pure camphor is 178.4 degrees C, and its molal freezing-point constant, Kf, is 40.0 degrees C/m. Find the freezing-point of a solution containing 3.00 g of a compound (molar mass=125 g/mol) dissolved in 45.0 g of camphor

  What is the number of moles of air

At 0.0 C, if the volume of air is 2 mL and the pressure of the atmosphere that day is 665 mmHg, what is the number of moles of air?

  Explain determined that for each mole of hydrocarbon

Using the technique of the previous problem ?E was found to be -2,000.00 kJ/mol at 298 K for an unknown liquid hydrocarbon. In another experiment it was determined that for each mole of hydrocarbon

  Write the nuclear equation for the alpha decay

Write the nuclear equation for the alpha decay ( production of radioactive decay that may be considered radioactive waste products by the useful production of nuclear energy ) of each nuclide that are products of a nuclear power plant Rn-222, T..

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