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Imagine an experiment in which a mixture composed of the following five compounds is subjected to TLC anaylsis: Ph-OCH3, Ph-COOH, Ph-CH2CH3, PhCOCH3. (Ph= Phenyl , C6H5). Arrange the five compounds in order of increasing Rf when Benzene is used as the eluent. And what differences would be observed, if any, if Ethanol were used as the eluent in place of Benzene?
A sucrose (table sugar, molar mass 342 g/mol) solution was made by dissolving 68.2g of sucrose in 800 g of water. What is the freezing point of this solution if Kf of water is 1.86 degrees C/Molal?
For this reaction calculate how many grams of the product form when 1.6g of Na2O completely reacts. Assume that there is more than enough of the other reactant. Na2O (s) + H2o (l) ----->2NaOH (aq).
How many grams of copper are in the necklace? 3. If 18-karat gold has a density of 15.5 , what is the volume in cubic centimeters?
use a solid line to represent the correct calibration line and a dotted line for the line with the systematic error.) Also discuss the advantages and disadvantages of spectral methods of analysis.
What are the products formed when nitroglycerin undergoes hydrolysis?
what is the molarity of a solution that contains 35.0 g of vitamin b1 hydrochloride molar mass 337 gmol in 110 g of
If a bottle of nail polish remover contains 181 g of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 g/mL
is it possible to use methylene blue to determine the concentration of ascorbic acid in orange
The reactions occur in acidic solution. (Use the lowest possible coefficients. Omit states-of-matter in your answer.) (a) MnO4- + H2SO3 ? Mn2+ + SO42-
If pure NOCL heated to 240C in 1 liter as well as at equilibrium the total pressure is 1atm and the pressure of NOCL is .64 atm 2NOCL(g) 2NO(g) + CL2(g)
A reaction produces 2 moles of a solid product from 2 moles of liquid and 1 mole of gas reactants. The process is exothermic
A 45.8 mL sample of a 5.8 M KNO3 solution is diluted to 1.00 L. What volume of the diluted solutions contains 15.0 g of potassium nitrate
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