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(a) What percentage faster will a reaction go if a catalyst lowers its activation energy from 50 kJ mol^- to 25 kJ mol^-. (Assume that the reaction is carried out at 25C)
(b) What percentage faster will a reaction having an activation energy of 25kJ mol^- go if the temperature is raised from 25C to 75C?
Find the pH solution & Hydronium ion concentration and What is the pH of a solution of 0.17 M acid and 0.81 M of its conjugate base if the pKa = 8.62?
The density of liquid oxygen at its boiling point is 1.14 {kg/L} , and its heat of vaporization is 213 {kJ/kg} . How much energy in joules would be absorbed by 2.0 L of liquid oxygen as it vaporized? Express your answer numerically in joules.
Calculate the weight percent composition of the mixture, using the same assumptions as in part A.
What is the maximum mass of aluminum chloride that can be formed when reacting 29.0g of AL with 34.0g of Cl
Calculate the free energy change for translocating a proton out of the mitochondrial matrix, where pH(matrix) = 7.6 pH(cytosol) = 7.2
Distilled water in the same tube gave a reading of +0.016 degrees. Calculate the specific rotation for the compound.
Which two hydrogen atoms of salicylic acid are most likely to be acidic? which hydrogen atoms of methyl salicylate would you expect to be acidic
The ionization energy for sodium is 496 kJ/mol. The electron affinity for chlorine is -349 kJ/mol. Use these values and Hess's law to calculate the enthalpy for the following reaction: Na(g)+Cl(g) -> Na+(g) + Cl-(g)
If the coal is burned in a power plant that uses 1900 tons of coal per day, what mass of calcium oxide is required daily to eliminate the sulfur dioxide?
What is the pH at the equivalence point. f) What indicator would be most suitable for this titration. g) What is the pH when 105% of the required base has been added
Calculate the H3O+ concentration and the PH for the following: a) a solution with OH- concentration= 4.5*10^-4 M? b) a solution with a pH of 5.6
A pair of theoretical enantiomers is named below. For each stereoisomer, draw the structure. Be sure to specify the stereochemistry via wedge-and-dash bonds.
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