Example: 3C(s) + 4H2(g)-----> C3H8 find DeltaH for reaction. My book is saying to find, and then manipulate, similiar reactions with the "products and reactants" of interest where the DeltaH is ...

Higher Chemical energy Hess's Law Energy changes occur in chemical reactions as bonds are broken and new bonds formed. Enthalpy changes can be calculated from experimental data, and are ...