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Which of the following correctly describes what happens when the temperature of a chemical reaction is increased? Not: assume that the mechanism for the reaction does not change.
a) the frequency of collisions between reactanc particles decreases
b) the activation energy for the reaction decreases
c) the fraction of collisions having an "effective" orientation for reaction decreases
d) the fraction of collisions having sufficient kinetic energy for a reaction to occur increases
e) none of the above statements are correct
a three carbon species that has a carbon level of zero at each carbon atom. b) two compounds that contain three carbon atoms and have a carbon atom with a carbon level of 1.
if 88.6L of H2 measured at STP is allowed to react with 158.3g of P4, what is the limiting reactant?
The concentration which remains after 20 minutes is 80 mg/L. Determine the reaction order and the rate constant (with appropriate units).
Wisconsin, with an average power of approximately 8.00 kJ·s-1·m-2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 3.30 cm2 area per second?
which reagent will be in excess? What will the concentration of the of the excess be?
A 29.0-g sample of water at 290. K is mixed with 51.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Describe how you would construct your target electrochemical cell, including the identities and concentrations of all chemical species, as well as a diagram of the setup.
The reaction of 2,2-dimethyl-1-propanol with HBr is very slow and gives 2-bromo-2-methyl-propane as the major product. Give a mechanistic
A block of aluminum with a volume of 98.5cm^3 absorbs 68.4J of heat. If its initial temperature was 31.9 degrees celsius, what is its final temperature
What is an alternative way to draw this molecule? (include the resulting formal charge on the Nitrogen, please)
Draw the conj acid of this base and use its structure to explain why it is so basic (resonance forms may help). The pKa of the conj acid is about 26. What is the pKb of the free base?
A 60.0 g sample of an alloy was heated to 96.0 °C and then dropped into a beaker containing 87.0 g of water at 24.1 °C. The temperature of the water rose to a final 27.63 °C.
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