Find Hrxn for the following reaction: 3H2(g)+O3(g)3H2O(g) Use the following reactions with known H values: 2H2(g)+O2(g)--->2H20(G) DeltaH=-483.6kJ

Find ΔHrxn for the following reaction:

3H2(g)+O3(g)→3H2O(g)

Use the following reactions with known ΔH values:

2H2(g)+O2(g)--->2H20(G) \DeltaH=-483.6kJ

3O2(g)---> 2O3 (g) \DeltaH=+285.4 Kj

Express the energy to one decimal place and include the appropriate units.