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If you had a mixture of three compounds phenacetin, acetaminophen and aspirin A TLC plate showed three spots of Rf 0.1 and 0.2 and 0.3 (1:9 ethanol: hexane). Which compound would have the highest, middle and lowest spot respectively?
The enthapy change for this recation is 3.10 x 10^2 kJ/mol. Assuming that all this energy must be supplied by light, what is the maximum wavelength of light that can cause this reaction?
Using (and citing) appropriate sources, determine the energy output for E-85 (ethanol) and gasoline (octane) on a) a per mole basis
on a smoggy day in a certain city the ozone concentration was0.34 ppm by volume. calculate the partialpressure atm of
Calculate the hypothetical retention times for caffine and aspartame if their retention factors were reduced by 28.0 %. Assume the mobile phase retention time (tm= 29.7 s) remains constant.
Calculate the change in entropy (deltaS) when one mole of diamond is heated from a temperature of 0 K to 400 K at a constant pressure of 1 bar. The temperature-dependent heat capacity of diamond is Cv
however, it takes more CaCl2 to form a White solid in one of the solutions than the other. Using the data from your experiment to help, explain what is happening when CaCl2 is reacted with the NaHCO3 (aq) or Na2CO3 (aq) solutions.
Compute the increase in entropy when 3.50 moles of an ideal gas is heated from 250 K to 700 K and simultaneously expanded
what mass of sucrose should be combined with 537 ml of water to make a solution with an osmotic pressure of 8.55 atm at
A 24 L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if the volume is changed to 16 L?
Predict the shape and polarity of each of the following molecules. Assume all bonds are polar: a) a central atom with four identical bonded atoms and no lone pairs. b) a central atom with three identical bonded atoms and one lone pair. c) a centra..
If 2.55 g of NaOH were added to a 100.0 mL solution containing 0.10 M Ca(NO3)2, what concentration of Ca 2+ remains in solution?
What volume of chlorine gas at 646 torr and 32oC would be produced by the reaction of 14.75 g of MnO2 according to the following chemical equation. MnO2(s) + 4 HCl(aq) ----> MnCl2(aq) + Cl2(g) + 2 H2O(l)
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