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Calculate the pH at equivalence point when 40.0 ml of 0.50 M aniline is titrated with 30.0 ml of 0.67 M HBr. For aniline Kb=3.8x10exp-10
By what factor does the fraction of collisions with energy equal to or greater than activation energy of 100kJ/mol change if the temperature increases from 19.0 c to 50.0 c ? Give in scientific notation.
A proton in a linear accelerator has a de Broglie wavelength of 117pm. what is the speed of the proton?
The fathom was originally defined as the length of man's outsterched. it is now defined as 6.00 ft. calculate a resoanble estimate of the surface are of an adult humman' body in fathom.
What mass of oxygen (in grams) reacts when 14.2 g of ethanol (CH3CH2OH) are combusted in oxygen to produce carbon dioxide and water
Write the structure of the product obtained when cyclohexane is used to decolorize bromine-containing solutions
the vapor pressure of mercury Hg is .00180 mmHg at 77F. if Hg vapor reached equilibrium at this temperature in an enclosed space, what would the concentration of Hg be in the space. Assume normal atmospheric pressure.
Calculate the molar concentration of OH- ions in a 0.540 M solution of hypobromite ion (BrO^ -\K_b = 4.0* 10^- 6.)
An analysis had to be done in within and hour on a sample that clearly had a significant amount of water associated with it. Therefore, part of the sample was dried for an hour and part of the undried sample was assayed during the hour.
Compute the pH at the temperature of 25 0C of a solution prepared by mixing 50 mL of 1.60 M sodium hydroxide solution to 0.5 of .0850 M Furoic acid HC 5 H 3 O 3 .
Br2 and ICl have similar molecular weights which compund has a higher boiling point specifically
How many grams of cholesterol are in 230 mL of blood? The concentration of cholesterol (C_27H_46O) in blood is approximately 5.0mM.
Calculate w for each step and for the total process. What values for w would you calculate if the cycle were traversed on the opposite direction?
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