In photosynthesis, plants form glucose (C6H12O6) and oxygen from carbon dioxide and water

In photosynthesis, plants form glucose (C6H12O6) and oxygen from carbon dioxide and water. The balanced equation for photosynthesis is 6CO2 + 6H2O → C6H12O6 + 6O2

a) Calculate ΔH∘rxn at 15 ∘ C.
b) Calculate ΔS∘rxn at 15 ∘ C.
c) Calculate ΔG∘rxn at 15 ∘ C.