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A reaction has a rate constant of 1.28×10-4 /s at 27 C and 0.232 /s at 27C and .231/ s 77 at C.?
What is the activation barrier?
What is the value of the rate constant at 15C?
In a synthesis experiment you obtain a sample of product on which you do a melting point determination and find a melting point range of 108.0 to 114.3 degrees Celsius. The sample is supposed to be benzoic acid.
The sugar (sucrose, C12H22O11) is purchased from a sugar farmer who used to be a chemist and who packages it by the lbmol, and the process uses 1.75 lbmol/hr.
18.6 grams of a solute with moecular mass of 8940 grams are dissolved in enough water to make 1.00 dm^3 of solution at 25 ^0C. What is the osmotic pressure of the solution?
If the activation energy for a given compound is found to be 103 kJ/mol, with a frequency factor of 4.0 × 10^13 s^-1, what is the rate constant for this reaction at 398 K
Which of the following intermediates is present in the acid-catalyzed hydrolysis of t-butyl ethanoate but not in the acid-catalyzed hydrolysis of methyl ethanoate
Write the cell reaction for the combination of these half-cell reactions that leads to the largest positive cell emf
A buffering system in the blood is H2CO3/HCO4. At the normal blood pH (7.4) a solution of H2CO3 and HCO3 will change the pH abruptly if small amounts of acid or base are added since the pKa of H2CO3 is 6.4.
Acetone (C3H6O) burns with oxygen producing carbon dioxide and water only. Solid calcium nitrite is decomposed by heating, producing calcium oxide, nitrogen monoxide and nitrogen dioxide
What is the wavenumber in cm-1 for the HOMO to LUMO transition predicted by PM3, What value of ? can you infer, that would bring the HMO method into agreement with the more advanced Extended Huckel method?
The vapor pressure of water is 28.3 torr at 29°C then determine what is the partial pressure of oxygen collected if a reaction at that temperature produces Carbon Dioxide which is collected over water at a total pressure of 576 torr, ?
the solubility of oxygen in water is 14.74mgl at 0 celcius and 7.03mgl at 35 celcius. estimate the solubility at 50
Ethylene glycol (EG) is a commonly used automotive antifreeze. Calculate the boiling point and the freezing point of the 25% EG solution if Kb=0.512oC/m and Kf=1.86oC/m for water. Molar mass of EG=60.05 g/mol.
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