1. The problem statement, all variables and given/known data consider the decomposition of calcium carbonate: CaCO3(s) yields CaO(s) + CO2(g) a) calculate delta H and delta S from standard thermodynamic data. b) calculate delta G at 25.0C 2. Relevant equations G = H - TS 3. The attempt at a solution i added up all the thermodynamic data and got -2236 KJ/mol now this is the delta G but for (a) im not given a temperature(is it 25C) and i have to solve for two variables. not sure what to do.