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Access to this General Chemistry: Principles and Modern Applications, 9th Edition Companion Website with GradeTracker requires registration.

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  2. 2. Once you have registered with Pearson, following the instructions in Step 1, you will then need to return to this page by going to www.prenhall.com/petrucci, click on Companion Website next to the 9th edition, click Get Access, and see "Have an Account?" above.

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