The reaction of hydrogen sulfide(g) with oxygen(g) to form water(g) and sulfur dioxide(g) proceeds as follows:
2H2S (g) + 3O2 (g) -----> 2H2O (g) + 2SO2 (g)
When 8.49×100 g H2S(g) reacts with sufficient O2(g), 1.30×102 kJ is evolved.
Calculate the value of change in rH for the chemical equation given._____ kJ/mol?