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You need to prepare an acetate buffer of pH 5.73 from a 0.797 M acetic acid solution and a 2.10 M KOH solution. If you have 925 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a bufer of pH 5.73? The pKa of acetic acid is 4.76.
Determine Hvap for a compound that has a measured vapor pressure of 24.3 torr at 273 K and 135 torr at 325 K. Determine the Vapor Pressure (in mmHg) of a substance at 29*C whose normal boiling point is 76*C and has a Hvap of 38.7 kJ/mol
The pH of a sodium acetate-acetic acid buffer is 5.30. Calculate the ratio [CH3COO-]/[CH3COOH].
What is the volume in mL of 0.845 M NaOH(aq) needed to reach the equivalence (stoichiometric) point in the titration
Primary alcohols
silver has an average atomic mass of 107.87 u. if 48.18 of ag exists as ag-109 108.9047 u what is the identity and the
the modern periodic law is based on a atomic number batomic mass c atomic weight d chemical
from the time the mass of the flask is first measured until the time it is finally measured it is handled a number of
A 100 ml sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH the solution after the addition of 300.0 ml HBr
The major isotopes of tungsten are 182W (26.32%), 183W (14.31%), 184W (30.67%), and 186W (28.62%). What is the atomic weight of W?
Data for the decomposition of hydrogen peroxide at some set temperature T is include below. The rate law depends only on the concentration of H2O2.
the equilibrium constant for the hydrolysis of the dipeptide alanylglycine by a peptidase enzyme is k 8.1 x 102 at 310
For the following dehydrohalogenation (E2) reaction, draw the Zaitsev product(s) resulting from elimination involving C2-C3 (i.e., the carbon atoms depicted with stereobonds). Show the product stereochemistry clearly
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