def heatCapacity_f1(T, hCP):
    """
    heatCapacity_form1(T, hCP)
      slop vapor & solid phases: T in K, heat capaity in J/mol/K;

    heat capacity correlation
      heat capacity = A + B*T + C/T^2
    
    Parameters
      T, temperature
      hCP, A=hCP[0], B=hCP[1], C=hCP[2]
      A, B, and C are regression coefficients  

    Returns
      heat capacity at T
    """
    return hCP[0] + hCP[1]*T + hCP[2]/T**2