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Using the heats of vaporization for at 25 = 44.02 , at 100 = 40.67 , calculate the entropy change for the vaporization of water at 25 and at 100 .
the electron microscope has been widely used to obtain highly magnified images of biological and other types of
Calculate the pH in a solution prepared by dissolving 0.08 mol of solid NH4CL in 0.450 L of 0.35 M NH_3. Assume that there is no volume change.
If a pure R isomer has a specific rotation of -152.0°, and a sample contains 71.0% of the R isomer and 29.0% of its enantiomer, what is the observed specific rotation of the mixture
If you fill the larger tank with oxygen to a pressure of 115 , to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
Draw the major organic product(s) formed when hex-2-yne undergoes hydration in the presence of HgSO4 and H2SO4.
The pressure exerted on a 240 mL sample of hydrogen gas at instant temperaure is increased from .428 ATM to.724 ATM. What will the final volume be for the sample be?
A urine sample was found to have a pH of 5.83. What would be the ratio of the unprotonated form, A, to the protonated form, HA, for uric acid in this urine sample?
Autoclave that are used to sterilize surgical tools require a tempereature of 120 degree to kill bacteria. At what presure must they operate?
determine the velocity of a medicine ball m 10.0 kg with a wavelength of 1.33 times 10-35
hydrochloric acid is usually purchased in a concentration form that is 37.0 hcl by mass and a density of 1.20 gml. what
Carbonate buffers are significant in regulating PH of blood at 7.40. Calculate the concentration of Carbon dioxide in a 0.200M NaHCO3 at PH=7.40.
for the reaction described by the following rate law rate k a b2nbspc-1nbsp indicate the order with respect to each
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