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Problem- List reasons why the theoretical pH value of the buffer you prepared was different from the experimental pH value.
in the electroysis of an aqueous solution agno3nbsp0.67gof agis deposited after a certain period of time. what is the
Provide a stepwise mechanism for the reaction, showing all electron movement using the curved arrow convention. Sketch a qualitative energy level diagram for the mechanism labeling all relevant points.
copper has a specific heat of 0.092 calgmiddotdegc. when 52.7 cal of heat is added to a piece of copper the temperature
a solution is prepared by mixing 66.7 g h2o with 33.3 g hoch2ch2oh ethylene glycol. what is the concentration of
The first-order reaction for Hydorgen peroxide decomposing to H20 and O2 (aq). The rate constant at 25 C is 7.40 x 10^-4/second. Calculate the volume of O2 obtained form the decomposition reaction of 1 mol hydrogen peroxide at 25 C and 740 mmHg af..
a 67.0-g piece of gold at 725k is dropped into 165 g of h2ol at 298k in an insulated container at 1 bar pressure.
A certain element has three isotopes. The isotopes masses (amu) and abundances are 159.37( 30.60%), 162.79 (15.79%) , and 163.92(53.61%). Explain what is the average atomic weight (amu) of the element
The boiling point elevation of a solution consisting of a nonvolatile solute in 90.7 g of benzene is .6348 degrees celsius. What is the molecular weight of the unknown solute in g/mol
Draw and discuss the mechanism of the Diels-Alder reaction (with arrows to show the electron movements). Draw the orientation of the reacting p-orbitals and indicate how they overlap to form product.
A first order reaction has a rate constant of 0.342 sec^-1 at 29.5 degrees C. If the activation energy is 69 kJ, calculate the temperature in degrees C at which the rate constant is 0.428 sec^-1.
If the heat of vaporization for Br2 is 29.6 kJ/mol and ΔS° for the vaporization is 88.9 J/mol⋅K, what is the boiling point for bromine?
a beaker containing 250 ml of a 0.500 m solution of acetic acid cooh is added to 125 ml of a 0.850 m solution of sodium
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