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$5.00 general chemistry

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Due on Dec. 07, 2008
Asked on Dec 07, 2008 at 8:24:20PM

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an organic compound had the following analysis: C- 55.8% by weight, H - 7.03% by weight, and O- 37.2% by weight. A 1.500 g sample was vaporized and was found to occupy 530 cm cube at 100%C and 740 torr. What is the molecular formula of the compound?

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jenkins392
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$5.00 Formula

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Posted on Dec 07, 2008 at 10:40:00PM

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Preview: ... ich includes t ...

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$5.00 Method of calculating empirical and molecular formula.

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Posted on Dec 08, 2008 at 03:38:24PM

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Preview: ... substituting for n, we get: PV=(wRT)/M hence M = (wRT)/(PV) given: V=530 cm cube = 530 mL = 0.53 L Temperature T= 100 degC = 273+100 = 373 K Pressure, P=740 torr = 740 mm Hg (as 1 torr = 1 mm Hg) since 1 atm = 760 torr = 760 mmHg so, P=(740/760) atm substituting these values in M = (wRT)/(PV) M= (1.5g)*(0.0821 L-atm/mol-K)*(373 K) ----------------- ...

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