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1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

3. Ionic Compounds

Naming Ionic Hydrates

GOB Chemistry

3. Ionic Compounds

Naming Ionic Hydrates

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Multiple Choice

Write the chemical formula for the following compound:Calcium selenide hexahydrate

CaSe • 6 H₂O

CaSe₂ • 6 H₂O

Ca₂Se • 6 H₂O

Ca₂Se₂ • 6 H₂O

Ca₃Se₂ • 6 H₂O

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Verified step by step guidance

Identify the ions involved in the compound. Calcium (Ca) is a metal that typically forms a +2 charge, and selenide (Se) is a non-metal that typically forms a -2 charge.

Determine the correct formula for calcium selenide. Since calcium has a +2 charge and selenide has a -2 charge, they combine in a 1:1 ratio to form CaSe.

Recognize the term 'hexahydrate' which indicates that there are six water molecules associated with each formula unit of the compound.

Combine the formula for calcium selenide with the water molecules to form the complete formula for the hydrated compound: CaSe • 6 H2O.

Review the options provided and confirm that the correct chemical formula is CaSe • 6 H2O, which matches the description of calcium selenide hexahydrate.