posted by Gweedo .
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:
.0611995 mol of O2 x .0821Latm/molL x298.15K / 1.0atm=1.498
Why is 1.498 incorrect?