standard enthalpy of formation of UH3(s) , chemistry homework help

The equilibrium pressure of H2 over U(s) and UH3(s) between 450 K and 715 K fits the expression ln(p/Pa) = A + B/T + C ln(T/K), with A = 69.32, B =−1.464 × 104 K, and C = −5.65. Find an expression for the standard enthalpy of formation of UH3(s) and from it calculate ∆rCp

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