Unformatted text preview: Rule 2. Greek prefixes are attached to the word "hydrate" to indicate the number of water molecules per formula unit for the compound (e.g., Ba(OH) 2 •8H 2 O; 8 water molecules = " octa hydrate"). Rule 3. When the chemical formula for a hydrated ionic compound is written, the formula for the ionic compound is separated from the waters of hydration by a centered "dot"....
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- Fall '02
- Mole, Ion, Water of crystallization