chris mathews
Thursday, January 21, 2010
another day in chemistry by chris mathews
today we started the class with some superb singing by michael and joe krebs to the popular tune of the lion king. While most of the audience thought it was great, there are always a few critics. On the matter of chemistry we discussed how to properly solve problems that will be on our test. the test will be either tuesday or hopefully thursday of next week. Remember to do your homework tonight which is the worksheet, and to SHOW YOUR WORK!!!! also support the wrestling team in their closing season as they go for state. good luck all with you homework, call kyle for any questions
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remember to use significant figures when multiplying because if you dont on the test then it will be wrong.
ReplyDeletehere is a website that helps to explain theoretical yield:
ReplyDeletehttp://orgchem.colorado.edu/hndbksupport/labnb/theoryield.html
This site talks about percent yield
ReplyDeletehttp://www.cartage.org.lb/en/themes/sciences/chemistry/Miscellenous/Helpfile/Stoichiometry/Percentyield.htm
http://www.midnighttutor.com/PercentYieldFull.html
ReplyDeleteHeres a site on limiting reactants
ReplyDeletehttp://www.mikeblaber.org/oldwine/chm1045/notes/Stoich/Limiting/Stoich07.htm
http://www.shodor.org/unchem/basic/stoic/index.html
ReplyDeletehere is a good site on stoichiometry
always be careful to use the right sig figs
ReplyDeleteGood site on percent yield
ReplyDeletehttp://www.800mainstreet.com/6/0006-007-percent-yield.html
This site has good percent yield problems.
ReplyDeletehttp://www.uen.org/utahlink/tours/tourElement.cgi?element_id=42288&tour_id=17891&category_id=33176
just know the sig figs of the given amount and that is the number of sig figs for your final answer because everything else is a ratio of moles and molecular mass of a compound/element
ReplyDeleteI called kyle, and he could not answer my questions. Thanks for the advice, chris.
ReplyDeletehere is the best website ever. IT CALCULATES MOLAR MASS FOR YOU
IT CALCULATES MOLAR MASS FOR YOU
IT CALCULATES MOLAR MASS FOR YOU
IT CALCULATES MOLECULAR WEIGHT FOR YOU
IT CALCULATES MOLECULAR WEIGHT FOR YOU
http://www.webqc.org/mmcalc.php
IT'S A LEGIT EXCELLENT TOOL!
PLEASE PLEASE USE IT!
Good site for Percent Yield:
ReplyDeletewww.800mainstreet.com/6/0006-007-percent-yield.html
A website that explains and has practice problems for theoretical, actual, and percent yield. very helpful.
ReplyDeletehttp://www.science.uwaterloo.ca/~cchieh/cact/c120/yields.html
http://www.science.uwaterloo.ca/~cchieh/cact/c120/limitn.html
ReplyDeletegood website on limiting and excess reagents.
The Lion Sleeps Tonight is originally by The Tokens, by the way.
ReplyDeleteSince we seem to be on a theme of reminding everyone about sig figs, here's a sig fig calculator for anybody who really needs it.
http://ostermiller.org/calc/significant_figures.html
This site has a discussion about conversions that we are working on
ReplyDeletehttp://answers.yahoo.com/question/index?qid=20090209135704AAUSpFware
http://www.chem.tamu.edu/class/majors/tutorialnotefiles/limiting.htm
ReplyDeletebreaks down limiting reactants for ya.
oh and thank you Mchael
OK, just to set the record staight, Colby was the only one who called me tonight. And it was about English not chemistry! (shame on you, Mr. Scully, for libel against a fellow student)
ReplyDeleteanyway i think i'm the last post of the night, sooooo i'm going to post a video that is cool, except no one but Dr. B may watch. here you go-->
very nerdy guy explaining mole ratios, but very good
http://www.youtube.com/watch?v=Z_GpPmTqcFU
a fun stoichiometry video (crank 'dat stoich boy)that is almost as bad as the cookie joke
http://www.youtube.com/watch?v=qJ-qMbhtLHk
balancing equations...
ReplyDeletehttp://www.webqc.org/balance.php
Steps on finding percent yield:
ReplyDeletehttp://danielleamorim.tripod.com/