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1. Explain collision theory and thoroughly discuss the effect of a catalyst on the reaction rate of chemical reactions.
2. Graph to illustrate the effect of a catalyst on reaction rate. Label the graph correctly: the x-axis should be labeled "time" and the y-axis should be labeled "energy."
a sample of propanec3h8 contains 10.8 moles of carbon atoms. how many total moles of atoms does the sample
solution requires 18.6 mL of 0.200 M NaOH to reach the end point of the titration, what is the molarity of the acetic acid solution? CH3COOH (aq) + NaOH(aq) CH3COONa (aq) + H2O(l)
an aqueous solution containing 4 mm of a weak acid ha has anabsorbance of 0.72 in a cuvet having an optical pathlength
How many valence electrons are there in a Cr atom, Which of the following 1M solutions will have the highest concentration of ions
For an enzyme assay you require a 50 mM Tris-HCl buffer, pH 7.8. How many grams of Tris (mw = 121, pKA = 8.1) and how any ml of 2 M HCl would you require to make 1 L of this buffer
A solution containing 0.2 g/mL of a pure R enantiomer in a 1 dm polarimeter rotataes plane polarized light by +3 degrees. What is the specific rotation of the R isomer. What will be the specific rotation of its S isomer
Sketch a titration curve for the titration of 100mL of 1.25x10^-2 M ascorbic acid with 1.00x10^-2 M NaOH, given that Ka= 8.0x 10^-5 and Ka2= 1.6x10^-12. How many equivalence points should the curve have and what color indicator(s) could be used?
prepare 100 mL each of five standard solutions: 2.00 x 10-5, 5.00 x 10-5, 1.00 x 10-4, 2.00 x 10-4, and 5.00 x 10-4 M. These will serve as your analytical standards, which means that their phosphate concentrations must be precisely known.
What is the concentration of the HNO3 solution? (b) How many moles of NaOH were in excess after the first addition?
Why is the difference in names between HCN,hydrogen cyanide and KH,potassium hydride
how many millimeters of 5M NaOH are needed to neutralize 40mL of 2M H2SO4
Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope.
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