Question E9
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Question E9
How am I supposed to figure out the molecular formula for Epsom salt with just knowing its name is Magnesium Sulfate Heptahydrate?
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Re: Question E9
You can simply look it up, but the naming conventions are useful to memorize. "Sulfate" represents the ion SO4 which has a 2- charge. Since Magnesium has a charge of 2+, it pairs 1:1 with a sulfate ion, so the formula for magnesium sulfate is MgSO4. "Hydrate" indicates a water molecule surrounding an ion in an aqueous environment and "hepta" is the prefix for seven, so "heptahydrate" indicates seven water molecules. Putting this together, 'magnesium sulfate heptahydrate' indicates MgSO4 7H2O.
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Re: Question E9
Also within the next few weeks, we will cover nomenclature in class where we will learn all of the rules.
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Re: Question E9
You should probably learn basic names like sulfate which is SO4 because it comes up pretty often.
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