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What do the lines presented in a phase diagram represent? What is the "triple point"?
Do all substances have at least one triple point?
a student doing this experiment was puzzled by the fact that while each of the individual solutions being used is
Calculate the ph of a solution formed by mixing 100.0ml of .20 M HCLO with 200.0 ml of .30 M KCLO. the ka for HCLO is 2.9x10^-8
Calculate G at 27°C for the following reaction when the partial pressure of water is 0.76 atm given that the ?G° is 8.38 kJ. H2O(l) ? H2O(g)
The toxicity of (+)-carvone in rats is about 400 times greater than that of (-)-carvone. How do you account for this
a. calculate the ph of a solution which is 0.50m acetic acid and 0.25m sodium acetate.b. what is the new ph of the
When an alcohol burner is used for heating, the reaction shown below occurs. If this burner is used to heat 355 mL of water from 25.0ºC to just boiling, what is the minimum amount (in grams) of ethanol (C2H5OH) that needs to be in the burner
Carbonic acid is a diprotic acid, H2CO3, with Ka1 = 4.3 x 10-7 and Ka2 = 4.8 x 10-11. Calculate Kb for the carbonate ion, CO32-
an empty flask has a mass of 123.4 grams. when the flask is filled with water, the mass is 211.6 grams. if 10 grams of zinc (density=7.14g/cm3) are added to the flask filled with water, what is the new mass of the flask?
Use the Nernst equation to calculate the new cell voltage of the fresnium /copper cell if the fresnium has a concentration of 0.37 M, and the copper nitrate is at a concentration of 0.77 M.
For the kinetic assay, 0.2mL of a 0.15mg/mL solution of enzyme was used, and the enzyme has a molecular weight of 75,000g/mole. Assume a reaction volume of 3mL. Calculate the kcat (in sec^-1) for the enzyme.
Why the presence of a phenyl group causes loss of stereospecificity in this alkene bromination?
In his explanation of the photoelectric effect, Einstein stated that the incident radiation had to have a minimum energy to dislodge the electron from the metal surface. This energy is called the work function.
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