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Evaluate theoretical quantities of thionyl chloride and sodium borohydride needed to convert benzoin to E-stilbene.
Calculate the percent by mass of the solute CH2Cl2 in a solution made by mixing 453 mL of methylene chloride to 2.36 L of the solvent acetone
In aqueous solution, the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule?
12 grams of hydrogen is combined with 104 grams of oxygen as an explosive reaction that forms water as its sole
A solution of 75.0 g of benzene (C6H6) and 75.0 g of toluene (C7H8) has a total vapor pressure of 80.9 mmHg at 303 K. Another solution of 100.0 g benzene and 50.0 g toluene has a total vapor pressure of 93.9 mmHg at this temperature.
The activity of an enzyme is close to zero at pH = 10 and above and high at pH = 6 and below. The activity of this protein probably depends upon the presence of an amino acid with R-group
Let x1 and x2 represent the mole fractions of 1-propanol and 2-propanol in a liquid mixture, respectively and y1 and y2 represent the mole fractions of each in the vapor phase. For a solution of these liquids with x1=.680, calculate the composition..
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
Barium imparts a characteristic green color to a flame. The wavelength of this light is 551nm. Determine the energy involved in kj/mol.
Dissolving 3.00 g of an impure sample of CaCO3 in an excess of HCl acid produced .656 L of CO2 (measured at 20 degrees C and 792 mmHg). calculate the percent by mass of calcium carbonate in the sample. State any assumptions.
Draw a reaction profile to illustrate the conversion of 2-methyl-2-butanol and HCl to 2-cloro-2-methylbutane and water. Label enthalpy of activation, H‡, for the rate-determining step and the enthalpy, Hrxn, for the overall reaction.
consider the hypothetical reaction a b reg c with the rate law rate ka2b. if the concentration of a is increased by
Compute the number of moles - As we know many volatile substances are present in Earth's atmosphere in trace amounts.
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