| Percent Composition by Mass Fun in the desert |
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 | Why would someone want to know the percent composition by mass of a compound or substance? | |
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| Beats me. | |
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| Percent composition indicates the relative amounts of each element in a compound. |
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| If you know molecular weight and empirical formula for a covalently bonded compound you can calculate molecular formulas. | |
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| No kidding! Doing that is on my bucket list! | |
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| WhatÂ’s your favorite compound? | |
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| Well, I am really thirsty out here. I love water as a compound and as a refreshing beverage. | |
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