<p>Its scary how much PR is missing in SAT II Chemistry compared to the amount of information in Kaplan SAT II Chemistry. There is so much math that I would never have expected to be phrased so complicated. Even some important equations that are truly lacking in PR scares me, if you compare the PR chapter and Kaplan chapter in Thermochemistry, its astounding. </p>
<p>SO the question is?</p>
<p>Is PR saying that the extra information in Kaplan is unnecessary to get an 800? Or is PR just sticking with basics and hoping the customer only seeks high 600’s to low 700’s?</p>