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July 31, 2015

Homework Help: Chemistry

Posted by Gweedo on Wednesday, June 17, 2009 at 12:14pm.

The thermal decomposition of potassium chlorate can be used to produce oxygen in the laboratory.

What volume (L) of O2 gas at 25 C and 1.00 atm pressure is produced by the decomposition of 7.5 g of KClO3 (s)?

Here is my work:

V=nRT/P

.0611995 mol of O2 x .0821Latm/molL x298.15K / 1.0atm=1.498

Why is 1.498 incorrect?

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