You want to do some thermodynamic modeling, but you want to make sure the standard state property values for Gf are consistent with the entropy and enthalpy values listed as well before you proceed. Part A. Calculate the entropy of formation (Sf) from the elements of muscovite KAl₃Si₃O₁₀(OH)₂ Part B. Combine this with the enthalpy of formation (Sf) from standard state tables to calculate the Gibbs free energy of formation (Gf) for muscovite. Compare your calculated value with the value in the tables.