grams of oxygen found

Chemistry
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When a sample of potassium chlorate KClO3 decomposes to give solid KCl and O2 35.5 mL of oxygen is collected over water at 25C and 725 mmHg balanced chemical equation is         vapor pressure of water = 23.8 find the partial pressure and mass of oxygen.

2KClO3 --> 2KCl + 3O2

I found the partial pressure to equal 0.9226 atm and through PV = nRT found 0.001339 moles of oxygen. When I try to find the mass of oxygen, do i just multiply the moles and mm or does the 3 coefficient play a role in it?

Apr 29th, 2015

You just have to multiply the no: of moles and mm to get the mass of oxygen.

Please let me know if you have any other questions and best me if you are satisfactory.

Apr 29th, 2015

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Apr 29th, 2015
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Apr 29th, 2015
Feb 22nd, 2017
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