1210 MT 2 - periodic table and equations

[Zellmer, Robert]

The information sheet provided on Carmen doesn't have a periodic table and someone
asked about it.  You will get a periodic table.  You are not expected to have memorized it.

Speaking of memorizing.  You aren't getting equations.  There really aren't many of them
and they're not real hard equations.  Look at the sheet I provided for quiz 6 and you'll find
equations from Ch 6 (most are also give in the Key Eqns section at the end of the chapter.
If you know the energy of a Bohr orbit you can easily come up with the equation for
del(E) for an electron transition from one orbit to another and the Rydberg eqn.  If you
need the Rydberg constant it will either be in the question or perhaps they will update
the info sheet to include it.  We don't expect you to memorize it.

Look at the Key Equations sections for Ch 4 and 5 as well.  There's only two eqn from
Ch 4, the definition of molarity and the dilution eqn.  You should know both of these and
they normally wouldn't be given on an exam.

For Ch 5 you have the eqns relating del(E) to q and w, w to -P*del(V), H to E and PV
and q to heat capacity (or specific heat capacity) and del(T).  The latter are q = C*del(T)
and q = m*C_s*del(T).  There's also the eqn for electrostatic energy between two
charged particles and the eqns for determining del(H_rxn) from enthalpies of formation
and from bond enthalpies.  I noticed on the last quiz several people had the correct
numbers for those questions but the wrong signs.  When using del(H_f) values to
determine del(H_rxn) it's Products - Reactants.  When using bond enthalpies to
determine del(H_rxn) it's (bonds broken) - (bonds formed).

If you've done enough homework problems you should pretty much know these eqns.
If you're worried and want to memorize them my suggestion is to treat them like spelling
words and write each one out 10-20 times while verbally saying the equation to yourself
out loud.  Then do it again the following day and then again maybe a third day.  You'll
remember them, at least long enough for the exam.

Dr. Zellmer
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