calculus and general chemistry, i hated both subjects, therefore they were hard, because getting to study was like pulling teeth. multiple teeth. in fact, i would have preferred getting my teeth pulled by some pre-DDS SDN members 😱
easiest was OChem, biochemistry, and molecular biology. I REALLY loved those subjects and got A's in them as a result.
I'm considering retaking the inorganic chem series...specifically for USN's academic forgiveness program in case i have to push entry to Fall '09 due to reapplication.