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Give the systematic name from the given formula: K2Cr2O7 ∙ 3 H2O
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- 1. Matter and Measurements4h 34m
- What is Chemistry?8m
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- Classification of Matter16m
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- 3. Ionic Compounds2h 20m
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- 11. Nuclear Chemistry1h 1m
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- Overview of Protein Synthesis4m
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- Processing of pre-mRNA5m
- The Genetic Code6m
- Introduction to Translation7m
- Translation: Protein Synthesis18m
3. Ionic Compounds
Naming Ionic Hydrates
Scelta multipla
Write the chemical formula for the following compound: Calcium selenide hexahydrate
A
CaSe • 6 H2O
B
CaSe2 • 6 H2O
C
Ca2Se • 6 H2O
D
Ca2Se2 • 6 H2O
E
Ca3Se2 • 6 H2O
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Guida verificata passo dopo passo1
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.
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