Table of contents

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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

3. Chemical Reactions

Naming Ionic Compounds

General Chemistry

3. Chemical Reactions

Naming Ionic Compounds

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Multiple Choice

Which of the following is the correct chemical formula for aluminum nitrate?

Al(NO_2)_3

Al_2(NO_3)_3

Al_3N_2

Al(NO_3)_3

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Verified step by step guidance

Identify the ions involved: Aluminum typically forms a +3 cation, written as Al^{3+}, and nitrate is a polyatomic ion with the formula NO_3^{-}.

Determine the charge balance needed: Since aluminum has a +3 charge and nitrate has a -1 charge, you need enough nitrate ions to balance the +3 charge of one aluminum ion.

Write the formula by combining one Al^{3+} ion with three NO_3^{-} ions to balance the charges, resulting in Al(NO_3)_3.

Check the other options: Al(NO_2)_3 contains nitrite ions (NO_2^{-}), which is different from nitrate, so it is incorrect.

Al_2(NO_3)_3 suggests two aluminum ions combined with three nitrate ions, which does not balance the charges correctly, and Al_3N_2 is aluminum nitride, not aluminum nitrate.