From the reaction;
2SO2(g) + O2(g) = 2SO3(g) + 394 kJ
In the reaction a mixture of plantinum and vanadium (V) oxide may be used as a catalyst for the reaction. The sulfur trioxide produced is then used to make sulfuric acid.
The energy that is required to release 1 mole of sulfur trioxide is +394 joules
For one mole of sulfur trioxide;
the energy that will be released will be 394/2 = 197 kJ
Thus; the amount of energy released is +197 kJ
Chemical equation for above reaction is :
2KClO3 -------> 2KCl + 3O2
Explanation:
atomic number shows proton
It was due to the metal foil in which the alpha particles can't even pass through. This experiment conducted by Rutherford led to the discovery of protons.