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If Ef and Eb are the activated energies of the forward and reverse reactions and the reaction is known to be exothermic, them
(A) Ef < Eb (B) Eb = Ef
(C) Ef > Eb (D) Data insufficient to predict
One mole of a van der Waal's gas is compressed isothermally and reversibly from 20 dm^3 to 1 dm^3. a=.556 Pa mol^6/m; b=.064 dm^3/mol. Calculate w,q, and delta_U.
you have a bag of n 710 special imported coffee beans that you are putting in cups to distribute to your friends. the
What advantages exist when using the balloons to model molecular shapes? what advantages exist when using the model kit to model molecular shapes
Sodium Carbonate (NaCO3) is available in very pure form and can be used to standardize acid solutions. What is the molarity of the HCl solution if 25.3 mL of the solution is required to react with 0.256 g of Na2Co3
Draw a formula for the lowest molecular weight compound that contains C, H, and possibly O, is a chiral compound, contains ONLY one functional group, and is a(n) alkane.
To determine the concentration of a 25.0 mL acetic acid solution (Ka for acetic acid is 1.8 x 10-5), 25.0 mL of 0.200 M NaOH solution is used to reach the endpoint of titration. Calculate the pH of the endpoint.
How much heat is required to raise the temperature of 215g CH3OH (l) from 20.0 to 30.0 degrees C and vaporize it at 30.0 degrees C
A saturated solution of unknown metal hydroxide M(OH)2 has a measured pH of 8.91. Determine the value of Ksp for the compound.
The temperature of the glucose solution is 20degrees Celsius. What pressure drop must be applied across the membrane to stop the flow of water into the glucose solution. Assume that the glucose concentration is 1 mg mL^-1 and that the molecular we..
A sample of vapor occupies a volume of 125 mL at 100 degrees C and 748 torr. What is the volume of the same sample under STP conditions?
A beaker with 130 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M.
When 6.6 g solid NaOH is dissolved in 30.0 g of water in a coffee cup calorimeter, the temperature rises from 25.5 to 36.1. How much heat is produced by the dissolution process? the specific heat is 4.184
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