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Topic: Molar volume question in chemistry help needed!  (Read 2205 times)

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Offline jmg12

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Molar volume question in chemistry help needed!
« on: February 25, 2011, 06:56:36 PM »
A 4.5 g mixture of potassium chlorate and potassium chloride were heated and liberated 200 ml of oxygen. The gas was collected over water at 22 C (Pwater = 20 mmHg). The total barometric pressure was 770 mmHg. What percentage of pure potassium chlorate was contained in the 4.5 g mixture? Thanks so much!
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Offline DevaDevil

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Re: Molar volume question in chemistry help needed!
« Reply #1 on: February 26, 2011, 12:11:11 PM »
you will have to show your attempts first. Show us where you get stuck
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Offline Nobby

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Re: Molar volume question in chemistry help needed!
« Reply #2 on: February 26, 2011, 12:51:34 PM »
At least you can use pV = nRT. Pressure values have to converted to SI units.

U need the chemical equation. From Chlorate to Chloride by loosung Oxygen.
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