Question

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Answer 1

》Action of heat on mercuric oxide:Mercuric oxide is a red powder. When it is heated in a test tube, it decomposes to give mercury and oxygen

2HgO==>2Hg + O2

》When potassium nitrate is heated, potassium oxide, nitrogen, and oxygen are produced as products. The balanced equation for this reaction is: 4KNO3(s) => 2K2O (s) + 2N2(s) +5O2(g)