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A reaction has a rate constant of 0.00117 s^-1 at 400 k and 0.689s^-1 at 450 k.1- Calculate the activation energy (Ea) and the pre- exponential factor (A) for this reaction. 2- what is the value of the rate constant at 425k
How many moles of CO2 form when all of the butane is the lighter burns. How many molecules of gas form when the butane in the lighter burns completely
determine the empirical and molecular formulas of a hydrocarbon which has a molecular weight of 84 mass unit which contains 85.7% carbon.
Determine if the following reactions will form a precipitate when mixed. If one is formed, write the BALANCED formula unit, the COMPLETE IONIC, and NET IONIC equations. If a precipitate doesn't form, write NR for no reaction
describe that means you have to write in detail how to prepare an aqueous 5.0 f solution of acetic acid ch3cooh. you
For chemical reactions involving ideal gases, the equilibrium constant K can be expressed either in terms of the concentrations of the gases (in M) or as a function of the partial pressures of the gases
What was the purpose of using aq. NaOH in aldol condensation lab? A. It acts as an electrophile on which an enolate ion can attack B. It acts as a nucleophile which can attack an electrophilic carbonyl carbon.
How many atoms of hydrogen are in 1 molecule of water, H2O
Predict the sign of the entropy change for the following reactions and tell whether the reactions are spontaneous or nonspontaneous. a. C8H16 (g) + H2(g) ? C8H18 (g) b. C2H5OH (l) + 3O2(g)? 2CO2 (g) + 3H2O (g)
Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equilibrium based on 300 mmol of acetic acid and 150 mmol of isopentyl alcohol as starting quantities. Use equilibrium constant of 4.2 for this calculation..
Determine the heat of formation of sulfuric acid, H2SO4 (l) from the following thermochemical equations: S8(s) + 8 O2(g)-->8SO2(g) H= -2374.6 kJ S8(s) + 12O2(g)-->8SO3(g) H=-3165.8 kJ H2O(l)+SO3(g)-->H2SO4(l) H=-132.3 kJ 2H2(g)+O2(g)-->2H2O(l) H=..
What proportions of benzene and ethylbenzene should be mixed (a) by mole fraction (b) by mass in order to achieve the greatest entropy of mixing
one hundred grams of water is saturated with NH4CLat 50 degrees C. According to table G, if the temperature is lowered to 10 degrees , what is the total amount of NH4CL that will precipitate?
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