Packaged with the textbook, this printed access card gives students access to OWL Online Web Learning. Featuring a more intuitive instructor interface, OWL offers more assignable, gradable content (including end-of-chapter questions specific to each textbook), more reliability, and more flexibility than any other system. Developed by chemistry instructors for teaching chemistry, OWL makes homework management a breeze and has already helped hundreds of thousands of students' master chemistry through tutorials, interactive simulations, and algorithmically generated homework questions that provide instant, answer-specific feedback. In addition, OWL users (instructors and students) experience service that goes far beyond the ordinary.