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CHAPTER 3-A Moles, Masses, and Chemical Equations

CHAPTER 3-A Moles, Masses, and Chemical Equations . The Structure of Atoms. Atomic Mass Unit 1 amu = 1/12 of the mass of on atom of Carbon-12 1 amu = 1.6605 x 10-24 g. Atomic and Molecular Mass. Mass: proton = 1.00728 amu neutron = 1.0086 amu electron = 0.0005486

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