What gas is released when potassium permanganate is decomposed

When potassium permanganate is decomposed, oxygen gas is released.

Potassium permanganate can be thermally decomposed according to the following equation:

The products formed are potassium manganate (K2MnO4), Manganese dioxide (MnO2), and oxygen (O2). Out of all the products, the only one that is gas is O2.

If the reaction is carried out in an open chamber, the oxygen gas would be released.

More on potassium permanganate can be found here: link

Potassium permanganate will decompose into potassium manganate, manganese dioxide and oxygen gas: 2KMnO4 → K2MnO4 + MnO2 + O. When Potassium permanganate is heated it turns to Potassium manganate, manganese dioxide and oxygen gas

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.