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Topic: Problem Help: Finding Molecular Formula from Mass Percent  (Read 3995 times)

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Offline leah106

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Problem Help: Finding Molecular Formula from Mass Percent
« on: June 11, 2012, 12:06:11 AM »
Can someone explain how I should go about solving this? The answer is N2H4O4, but I don't understand how to get that.

Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass % H, and 66.63 mass % O. If its molar mass is between 94 and 98 g/mol, what is its molecular formula?
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Offline Hunter2

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Re: Problem Help: Finding Molecular Formula from Mass Percent
« Reply #1 on: June 11, 2012, 12:52:17 AM »
Multipy the Percentage values with the Molecular weights and devide by the molecular weight of the Elements. 
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Offline Borek

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Re: Problem Help: Finding Molecular Formula from Mass Percent
« Reply #2 on: June 11, 2012, 03:27:33 AM »
For a more general approach google combustion analysis and empirical formula.
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