Tuesday, May 8, 2012

Final blog due 05/09/212 10:00 pm

Compare and contrast Arrehnius, Bronsted Lowry, and Lewis acids and bases to each other. Focus on the definitions for each. A chart may help.

Thursday, March 1, 2012

Chemical kinetics blog: due 03/04/2012 @10:00pm

For a first order reaction with a rate constant k = 3.13 x 102 s-1, how long does it take for the concentration of the only reactant to become 40% of the original amount? please explain your answer...

Tuesday, November 29, 2011

Blog 12 due 12/04 at 10:00 pm

Using molecular orbital theory and hybridization theory, predict the following for Li2:

a. magnetism: para vs dia
b. Bond Order and existence of the species
c. hybridization
d. molecular geometry
e. number of sigma and pi bonds

Wednesday, October 26, 2011

Blog 11 due 11/01/2011 @ 10:00 am

Give the maximum number of electrons in an atom that contains these quantum numbers:

a. n=3, l-2
b. n=5, m= +1/2

Tuesday, October 18, 2011

Blog 10 Due Monday Oct 24 10:00 pm

Ethanol, C2H5OH, has been proposed an an alternate fuel source. Calculate the standard of enthalpy of combustion per gram of liquid ethanol.

Tuesday, September 27, 2011

Blog 7 Due October 3, 2011

Suppose two 200 L tanks were filled separately with helium and hydrogen gas. What mass of each gas is needed to produce a pressure of 135 atm in its respective tank at 24 degrees Celsius?

Monday, September 19, 2011

AP Chem blog 6 due mon 9/26 at 9:00 am

Perform the following serial dilutions:

1.75 L of 0.33 M hydrochloric acid from a stock solution of 10 M hydrochloric acid

250 mL of .01 M acetic acid from a solution of 1.5 M acetic acid solution.

Use dimensional analysis to solve!