<p>im taking AP stats and AP chem</p>
<li><p>do you have a formula sheet for AP stats in the multiple choice section?</p></li>
<li><p>what formulas do you need to memorize for AP chem? do you need to know the semi-obscure ones?</p></li>
</ol>
<p>bump..........please answer</p>
<p>Know the basic formulas for the chem MC section (ie. ideal gas law, etc). An equation sheet is provided for the FR.</p>
<p>For the free response, look @ old tests on collegeboard.com</p>
<p>Get a review book for the MC formula sheet.</p>
<p>they give you the formulas for chem, know how to use them, and what some constants are.. for example R can either be 8.314 or .0821</p>
<p>As concretejungle said, an equation sheet is provided (along with a periodic chart and a table of standard reduction potentials) for the FR. Ideally, you should work all your FR practice problems using the equation sheet so you are comfortable with where things are and don't waste time looking for equations during the test.
As far as the basic formulas you shold know for the MC section, the only "formulas" that ever show up are PV=nRT and deltaG=deltaH-TdeltaS. The other math relationships you are expected to know are more definitions than formulas. (Ex: Molarity=moles/liters, Density=mass/volume, deltaH=sumofproducts - sumofreactants)
You are also expected to know conceptual relationships, but not necessarily the formulas, for things like rates of effusion/molar mass. For example, on the FR section, they could expect you to calculate the rate of effusion for CO2 given the rate of effusion for CO. On the MC section, they would simply expect you know that rate is inversely proportional to molar mass and be able to rank them fastest vs slowest.</p>
<p>So, a periodic table is provided for both sections and formulas for only the FRQs</p>