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Problem- A sample contains 132 mg of compound A along with 24.0 mg of impurity B. The solubility of compound A in water at 25 oC is 14.0 mg/ml, and at 100 oC is 110 mg/ml. The impurity B has the same solubility behavior as compound A in water. A) By showing all the calculations, describe how you would purify the sample. B) How many steps of crystallization you needed to do to get pure compound A? C) What is the amount of pure compound A after all crystallization steps? D) Calculate the percent recovery of pure compound A after all the crystallization st
Anyone can tell me how to solve it step by step so that I will be able to understand what is going on?
container and found that no change had occurred after one week. Offer possible explanations for the lack of reaction. Assume that A, B, and C are totally miscible liquids.
Consider a solution containing 4.95 mM of an analyte, X, and 1.79 mM of a standard, S. Upon chromatographic separation of the solution peak areas for X and S are 3569 and 10981, respectively. Determine the response factor for X relative to S.
which ions in water make it 'hard'? is it possible to test for only one of these ions quantitatively in the presence of the other.
Calculate the pH at the equivalence point for the titration of 0.100 M methylamine
Show the chemistry involved in dissolving iron(II)hydroxide with a strong sodium cyanide solution.
Consider the following reaction; 3A+B--3C, where 2 moles of A react with 1 mol of B to completion. Which of the statement is correct.
Amstop Company issues $20,000,000 of 10-year, 9% bonds on March 1, 2007 at 97 plus accrued interest. The bonds are dated January 1, 2007, and pay interest on June 30 and December 31. What is the total cash received on the issue date?
A Scientist uses an ultra-high vacuum chamber that has a pressure of 6.5x 10^-12 torr. If the temperature is 298 K, how many molecules are there in 2.0 cm^3? What is the molar volume
A 35 mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the pH after 30 mL of acid have been added.
3-bromo- 1-butene and 1-bromo-2-butene undergo sN1 reaction at nearly the same rate even though one is a secondary halid and the other is primary why
a saturated solution contains 11.0 g NaBrO3 in 40.0 mL of water at 0 degree Celsius. What is the solubility in g solute/(100 g H2O)? Calculate the mole fraction at this temperature.
Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3 NO2(g) + H2O(l) -→ 2 HNO3(l) + NO(g) If 927 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the same c..
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