Pearson's MyLab & Mastering products exist for each title, including customized versions for individual schools, and registrations are not transferable. In addition, you may need a CourseID, provided by your instructor, to register for and use Pearson's MyLab & Mastering products.   Packages Access codes for Pearson's MyLab & Mastering products may not be included when purchasing or renting from companies other than Pearson; check with the seller before completing your purchase.   Used or rental books If you rent or purchase a used book with an access code, the access code may have been redeemed previously and you may have to purchase a new access code.   Access codes Access codes that are purchased from sellers other than Pearson carry a higher risk of being either the wrong ISBN or a previously redeemed code. Check with the seller prior to purchase.   -- Known for its friendly writing style and real-world, health-related applications, Timberlake’s Chemistry: An Introduction to General, Organic, and Biological Chemistry was created specifically to help prepare you for a career in a health-related profession—such as nursing, dietetics, respiratory therapy, or  environmental and agricultural science. It assumes no prior knowledge of chemistry, and makes your course an engaging and positive experience by relating the structure and behavior of matter to its role in health and the environment. The Eleventh Edition introduces more problem-solving strategies, including new concept checks, more problem-solving guides, and more conceptual, challenge, and combined problems. This revision is available with MasteringChemistry , the most widely used online tutorial and assessment platform in the world.

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