Multiple Choice
Write the chemical formula for the following compound: Calcium selenide hexahydrate
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- 1. Matter and Measurements4h 29m
- What is Chemistry?7m
- The Scientific Method9m
- Classification of Matter16m
- States of Matter8m
- Physical & Chemical Changes19m
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- 3. Ionic Compounds2h 20m
- Periodic Table: Main Group Element Charges14m
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- Ionic Bonding6m
- Naming Monoatomic Cations6m
- Naming Monoatomic Anions5m
- Polyatomic Ions25m
- Naming Ionic Compounds11m
- Writing Formula Units of Ionic Compounds7m
- Naming Ionic Hydrates6m
- Naming Acids18m
- 4. Molecular Compounds2h 18m
- Covalent Bonds6m
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- Multiple Bonds4m
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- Lewis Dot Structures: Ions (Simplified)8m
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- Law of Conservation of Mass5m
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- Balancing Redox Reactions (Simplified)13m
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- 11. Nuclear Chemistry1h 1m
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- 14. Compounds with Oxygen or Sulfur1h 22m
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- 24. Lipid Metabolism1h 45m
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- 26. Nucleic Acids and Protein Synthesis2h 54m
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- DNA Double Helix6m
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- Types of RNA10m
- Overview of Protein Synthesis4m
- Transcription: mRNA Synthesis9m
- Processing of pre-mRNA5m
- The Genetic Code6m
- Introduction to Translation7m
- Translation: Protein Synthesis18m
3. Ionic Compounds
Naming Ionic Hydrates
Multiple Choice
Give the systematic name from the given formula: K2Cr2O7 ∙ 3 H2O
A
dipotassium dichromate trihydrate
B
potassium dichromate trihydrate
C
potassium chromate trihydrate
D
trihydrate potassium chromate
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Verified step by step guidance1
Identify the chemical formula given: K2Cr2O7 ∙ 3 H2O. This represents a compound with potassium (K), dichromate (Cr2O7), and water molecules (H2O).
Recognize that K2Cr2O7 is known as potassium dichromate. The 'di-' prefix indicates two chromium atoms in the dichromate ion (Cr2O7).
Note the presence of '∙ 3 H2O' in the formula, which indicates that the compound is a hydrate. Specifically, it contains three water molecules, hence the term 'trihydrate'.
Combine the names of the components: The systematic name is formed by combining the name of the ionic compound (potassium dichromate) with the number of water molecules (trihydrate).
Verify the systematic name: The correct systematic name for the compound K2Cr2O7 ∙ 3 H2O is 'potassium dichromate trihydrate', as it accurately reflects the composition and structure of the compound.
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