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At 60 degrees C the vapor pressure of pure benzene is 388mmHg and that of pure toluene is 137mmHg. Calculate the mole fraction of benzene in a solution of benzene and toluene that has a total vapor pressure of 266mmHg at 60 degrees C.
How does this technique error affect the molar concentration of the KIO3 solution. Will the reported molar concentration of the standardized Na2S2O3 solution be too high, too low, or unaffected
You find a reagent bottle that is labeled with "vanadium (III) nitrate hydrate" and it contains a chalky looking powder. Do you believe the label? Why or why not?
The hottest temperature yet recorded in Phoenix AZ was 122 dgrees F what is the temperaturein degrees C and K
Based on resonance structures for acrolein, do you expect the C=O stretch in acrolein to be of higher fundamental frequency or lower fundamental frequency than that of propionaldehyde
to find the by mass of a compound in a given sample.dissolving 3.00 g of an impure sample of calcium carbonate in
In the spinach extraction, indicate which of the following solvents may or may not be suitable as a replacement for the hexane used in the experiment: acetone, diethyl ether, ethanol. Briefly explain your choices.
Determine the rate of disappearance of A when [A]=.50 M and [B]= .25M. Determine the rate of disappearance of B when [A]= .50 M and [B]=.25M
You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.078 M NaOH. Next, you add 1.00 mL of 7.81 × 10-6 M lidocaine to this mixture
What is the percent yield of elemental sulfur if 7.54 grams of sulfur are obtained from the reaction of 6.16 grams of SO2 with an excess of H2S. 2H2S + SO2---> 2H20 +3S
We will abbreviate malonic acid, CH2(CO2H) 2 as H2M. Find the pH and concentrations of H2M, HM-, and M2- for the following. (Ka values for malonic acid are Ka1 = 1.42 10-3 and Ka2 = 2.01 10-6.)
A 2.0 L glass soda bottle filled only with air is tightly capped at 18°C and 686 mmHg. If the bottle is placed in water at 95°C, what is the pressure in the bottle
For FeCO3 dissolving in acid solution, the value of Keq is 0.66, calculate the concentration of Fe2+ in a solution obtained by treating solid FeCO3 with 0.315 M HNO3.
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