Compute the total amount of caffeine that can be extracted

Assignment Help Chemistry
Reference no: EM13272748

0.070 g of caffeine is dissolved in 4.0mL of water. the caffeine is extracted from the aqueous solution three times with 2.0mL portions of methylene chloride. Calculate the total amount of caffeine that can be extracted into three portions of methylene chloride. Caffeine has a distribution coefficient of 4.6, between methylene chloride and water.

Reference no: EM13272748

Questions Cloud

Determine what is the frequency response of the system : The unit step response of a linear time invariant system is s(t) = (1 - e-at)u(t). Where "a" is a positive, real valued constant. What is the impulse response of the system. What is the frequency response of the system.
Compute the amplitude of each wave : A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. What is the amplitude A of each wave
Design a voltage regulator circuit that can provide voltage : Design a voltage regulator circuit that can provide a voltage Vload = 5V at a maximum of 100mA from a 6-V battery. A maximum of 1 W of power should be dissipated in any one component.
Find how long does it take the output to reach 0 v : DeSign a Miller integrator with a time constant of 0.1 s and an mput reSistance of 100 kfl. A dc voltage of - I volt IS applied at the input at time 0, at which moment tI" = -10 V. How long does it take the output to reach 0 V') + I 0 V
Compute the total amount of caffeine that can be extracted : Calculate the total amount of caffeine that can be extracted into three portions of methylene chloride. Caffeine has a distribution coefficient of 4.6, between methylene chloride and water.
Explain the temperature change of an aluminum : A student follows the procedure for his experiment and burn a peanut. The peanut weighed 0.780 g before combustion and 0.054 g after combustion. The temperature change of an aluminum can be filled with 200 mL of water was 15.3 degree Celsius. (Den..
Design an inverting singe stage low pass filter with gain : Design an inverting singe stage low pass filter with gain = 40 dB, Rin = 10 kΩ , corner frequency of 50 Hz. Determine the max and min gain and the corne frequency for the component tolerances of 5%/ Plot gain vs frequency (Hz) with frequency on a ..
Write an expression for the frequency response of the sensor : Consider a thermal sensor that a time constant τ = 20 msec such that a step change in temp. requires approx. 3*τ to reach 95 % of the final value. a- write an expression for the frequency response of the sensor
What is the electric field needed to support drift current : Suppose a drift current density of 2000 A/cm^2 exists in the neutral region on the n-type side of the diode that has a relationship of 0.5 Cm. What is the electric field needed to support this drift current density

Reviews

Write a Review

Chemistry Questions & Answers

  State what is the difference of the kbr specrtum

what is the difference of the KBR specrtum in % transmittance and absorbance. and btw wavenumber and wavelength

  State the recycling plant to resume operations

Assuming that the water is contaminated, devise a method for disposing of the contaminated water without contaminating the environment, but allowing the recycling plant to resume operations as soon as possible.

  What would the change in temperature be in each change

What would the change in temperature be in each change if 1 mole of an ideal gas is subjected to numerous changes in state, C= 12.47 J/Kmol.?

  Calculate the response factors for the analyte

A solution containing 3.47mM X (analyte) and 1.72 mM S (standard) gave peak areas of 3473 and 10222, respectively, in a chromatographic analysis. Then 1.00ml of 8.47mM S was added to 5.00ml of unknown X, and the mixture was diluted to 10.0ml. This..

  Calculate percentage of oxygen contained in carbon dioxide

When pure carbon burns in air, 10.0 kg of carbon react with the oxygen in the air to form 36.7 kg of carbon dioxide. Calculate the percentage of oxygen contained in carbon dioxide.

  State what volume of naoh should be added to increase

a flask contains 30mL of 0.16 M phosphate buffer that has a pH of 7.1. what volume of 0.06M NaOH should be added to increase

  State the energetics of change of h and change of s values

considering the energetics of change of H and change of S values of solute/solvent interation, solvent/solbent interactions and aolut/solvent interactions

  Define hydrogen atoms are excited by a laser

Hydrogen atoms are excited by a laser to the n=4 state and then allowed to emit. What is the maximum number of distinct emission spectral lines that can be observed from this system? Calculate the wavelength of the 4 to 1 transition in m.

  What was the percentage by mass of ascorbic acid

An ascorbic acid supplement was analyzed by titrating a 0.1000g sample dissolved in water with 0.0200M NaOH. A volume of 15.20 mL of the base was required to completely neutralized the ascorbic acid. What was the percentage by mass of ascorbic aci..

  Explain titrating ammonia with nitric acid

Which indicator would be the best to use when titrating ammonia with nitric acid? Kb of NH3 is 1.8 x 10-5.

  Explain reactions spontaneous and non-spontaneous

Are the following reactions spontaneous, non-spontaneous, or not possible?

  Explain when calcium carbonate decomposes calcium oxide

Write a balanced equation for the decomposition reaction described, using the smallest possible integer coefficients. When calcium carbonate decomposes, calcium oxide and carbon dioxide are formed.

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