Bring stoichiometry to life with this high-interest, real-world problem set designed for AP Chemistry, Honors Chemistry, and advanced students. Instead of routine plug-and-chug questions, students explore how stoichiometry drives real processes — from synthesizing aspirin to forming water in interstellar space. This printable worksheet includes 10 multi-step, application-rich problems organized into themed sections such as pharmaceuticals, biochemistry, astrochemistry, climate science, and archa