4 thoughts on “27. Monday, Nov. 9, 2009”

1. chem111-mjknapp Post authorNovember 13, 2009 at 4:59 pm

   Britanny,
   I think that this was covered today. The proposed structure (above) has a big problem: the N has exceeded its octet limit. While this leads to good formal charge distribution (N,O,H are all FC=0), the octed violation is a big problem. The preferred structure is for only one double bond between N and a terminal O, which leads to the two good resonance structures. These will have formal charges that are non-zero, but at least the octet is intact.
2. bbausch November 12, 2009 at 9:43 am

   Hey, I am trying to do the Luis Structure Draw owl, I cannot get past #3, could anyone help? HNO_3_, I know there is 24 valence electrons but i cant get the drawing write.
   I believe it would be
   H-O(with 4dots)-N=O(with 4dots)
   ll
   O(with 4dots)
   but this doesn’t work can anyone help?
   Thank you,
   Brittany Bausch
3. Taylor Estupinan November 9, 2009 at 8:21 pm

   It says OWLS due Thursday but I don’t see anything posted. Are they going to be posted later on this week or something?
4. Connie Diep November 6, 2009 at 11:29 pm

   I dont understand the Millikan Oil drop experiment…it asks what forces the oil to go downward…isnt it the Millikan force of gravity?