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The same way you calculate the molecular mass of any compound.

Alternatively, if you know the mass of one isomer, you don't need to do any calculations. All isomers having the same formula have the same mass.

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โˆ™ 2010-10-21 20:26:48
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Q: How do you calculate molecular mass of an isomer?
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If you know the molar mass of the compound, you have to calculate the mass of the empirical formula and divide the molar mass of the compound by the mass of the empirical formula in order to find the ratio between the molecular formula and the empirical formula. Then multiply all the atoms by this ratio to find the molecular formula!

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