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The rate constant for the production of glucose from cellulose with a newly developed catalyst was found to vary with temperature as shown by the data in teh following table. What is the activation energy for this reaction?
k(M/s) T(K)
2.04*10^-4 250
6.78*10^-3 400
A 0.0050 molar solution of sugar is separated from pure water by a membrane at 20 C. What is the osmotic pressure?
students are advised to dispose of the 95% ethanol mother liquor from the recrystallization step n the nitration of bromobenzene in a waste bottle for halogented wastes while the same solvent used for the recrystallization
Suppose that a student performed the experiment and the calculations perfectly except for the following. Unknown the student, Cu (NO3)2•3H2O instead of CuSO4•5H2O was used to make up the known Cu 2 solution
calculate the pH of pure water at 298 K and 403 K. Recall that pH is defined in terms of activity not concentration.
Draw a structure of the species that is formed at the lower PH if the acid proton adds to the azo nitrogen atom adjacent to the aromaic ring containing the SO3- group. Why does the proton adds to this particular nitrogen when two other nitrogen at..
What is the molarity of benzyl alcohol if the molecular weight is 108.14, the volume is 5 mL
A feed containing 15% by weight of solids is to be concentrated to 40 % solids using a double effect backward feed evaporator. The first effect is heated by steam at 413 K.
Carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constanst (K) for this reaction (delta Gf values: H2CO3= - 616.1, H2O= - 237.1, CO2= - 394.4) .
Show how to make N-methylpropionamide using propionic acid and methylamine and other necessary reagents. The methylamine and propionic acid do not both have to be used in the first step.
draw correlation diagram the HOMO of allyl anion and the LUMO of ethylene and comment on the symmetry match of the two.
A benzene-toulene solution with a mol fraction for benzene of 0.300 has a normal boiling point of 98.6 degrees Celsius. The vapor pressure of pure toulene at 98.6 degrees Celsius
What will be the average atomic mass of element A if percentage abundance of these two isotopes are 48.17 % and 51.83 % respectively. ?
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