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Learn the toughest concepts covered in Chemistry with step-by-step video tutorials and practice problems by world-class tutors

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Ch.1 - Chemical Tools: Experimentation & Measurement

Ch.2 - Atoms, Molecules & Ions

Ch.3 - Mass Relationships in Chemical Reactions

BONUS: Lab Techniques and Procedures

BONUS: Mathematical Operations and Functions

Ch.4 - Reactions in Aqueous Solution

Ch.5 - Periodicity & Electronic Structure of Atoms

Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory

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Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure

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Ch.11 - Liquids & Phase Changes

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Ch.13 - Solutions & Their Properties

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Ch.16 - Aqueous Equilibria: Acids & Bases

Ch.17 - Applications of Aqueous Equilibria

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Ch.21 - Transition Elements and Coordination Chemistry

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Main Group Elements: Bonding Types

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Chapter 22, Problem 22.141a

a. Why is the SO₃ molecule trigonal planar but the SO₃^2– ion is trigonal pyramidal?

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Chapter 22, Problem 22.141a

a. Why is the SO3 molecule trigonal planar but the SO32– ion is trigonal pyramidal?

a. Why is the SO₃ molecule trigonal planar but the SO₃^2– ion is trigonal pyramidal?