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The activation energy of a certain reaction is 32.5 kJ/mol. At 20 C, the rate constant is 0.0130~s^{-1}. At what temperature would this reaction go twice as fast?
the peptide Phe-Val-Lys-Ser using the appropriate protease in a phosphate buffer solution at pH=7. What two species would actually constitute the phosphate buffer?
by referring to the figure determine the mass of each of the following salts required to form a saturated solution in
Which of the following ideal aqueous solutions would be predicted to have the highest vapor pressure. 2.00 m MgBr2
A 1g sample of carbon obtain from material found in a ancient site gave 7900 carbon-14 disentegrations in a 20-hour period. In the same amount of time 1g of carbon from a source found yesterday under went 18,400 disintegrations.
A current of 3.15 A is passed through a Pb(NO3)2 solution for 1.40 hours. How much lead is plated out of the solution.
in a test on the vaporization of water into air in a wetted-wall column the following data were obtained tube diameter
The pH of the solution at the equivalence point. e) The pH of the solution after 40.0 mL of HCl are added.
Calculate the percentage error likely to arise in an experiment if 1-mL, 5-mL, and 10-mL pipets are used for the transfer and each pipet contains five drops of water adhering to the inside of the barrel. A single drop of water has a volume of appr..
suppose a 5.00 l sample of o2 at a given temperature and pressure contains 2.73 times 1023 molecules. how many
A complex of correctly written formula [Pt(NH3)3Br]Br·H2O has which set of ligands in its inner coordination sphere. A) 3 NH3 and 2 Br- (B) 3 NH3, 1 Br--, and 1 H2O C) 3 NH3, 2 Br-, and 1 H2O (D) 3 NH3 and 1 Br-
what solution will have the lowest boiling point?
There are three possible arrangements of atoms and nonbonding pairs of electrons for the AB3N2 geometry. assuming that the effects of the relative strengths of different type of electron repulsions given in the background information
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