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At 25 degrees Celsius the first-order rate constant for a reaction is 2.0x10^3 s^-1. the activation energy is 15.0 kJ/mol. what is the value of teh rate constant at 75 degrees Celsius?
Sodium methoxide reaction: Pipet 1.65 mL of a 25% (by weight) solution of sodium methoxide in methanol into a 10 mL reaction flask.
Sketch a molecular orbital energy level, show the symmetry for each one, and indicate how each orbital is formed from the group orbital of 2H atoms and the atomic orbitals of S atom.
Caffeine (C8H10N4O2) is a stimulant found in coffee and tea. If a solution of caffeine in chloroform (CHCl3) as a solvent has a concentration of 0.0870 m, calculate the following. (a) the percent caffeine by mass (b) the mole fraction of caffeine
A 270- flask contains pure helium at a pressure of 755 . A second flask with a volume of 485 contains pure argon at a pressure of 727 torr.
that of the Ce(III)/Ce(IV) system is +1.44V, calculate the potential at the following points during the titration of 100 ml of 0.05M Fe(II) with 0.05M cerium (IV)
Write the electron configuration of the atom in the third row of the periodic table that has the largest difference between the third and fourth ionization energies.
What is the number of chlorine atoms are in 5.0 g chloral hydrate?
The standard free energy of activation of a reaction A is 76.8 kJ mol%u20131 (18.4 kcal mol%u20131) at 298 K.
aluminum has a specific heat of 0.900 jgmiddotdegc. how much energy is required to raise the temperature of 160. g of
If it required 27.92 mL of NaOH to reach the equivalence point, what was the concentration of the acetic acid solution?
calculate the ionization energy of xenon , given that the energy of a photon of this light is 1.95 x 10^18 J (I calculated that from the given wavelength of 102 nm). now how do i calculate the ionization energy in kJ/mol for xenon
How many joules of heat are lost by 3473 kg granite as it cools from 41.1°C to -13.1°C?
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