What happens when potassium nitrate is subjected to heating ?

What is the volume of oxygen at STP liberated when 12.25 g of potassium chlorate is subjected to heating?

When potassium cyanate is heated, it gives

What happens when (i) calcium nitrate is heated (ii) chlorine reacts with slaked lime (iii) quicklime is heated with silica (iv) magnesium is burnt in air.

What happens when barium azide is heated ?

What happens when sodium salicylate is heated with sodalime ?