Hi there, I'm a Double Honours Astrophysics/Pure Math student and this semester I'm taking Intro Chem, Set Theory & Number Theory, Logic, Classical Mechanics, and Calculus. I'm getting an A+ in all my other courses but I think I may end up with a C in Chem or maybe even a D. I've just been so busy that I put chem aside and now I've done really badly in it. It is a requirement to take it for the astrophysics part of my degree, but would it be okay to drop it and take a "W" on my transcript? I do plan to go to graduate school at hopefully a top 25 school, so would either getting a W or a C/D ruin my chances in both cases at achieving that? Any advice would be very helpful. Thanks!