<span>F = kx, where F is the force we apply, k is the spring constant, and x is the extension of the material so the </span><span>spring's effective spring constant k is: k = F / x k = ( 110 kg ) ( 9.81 m/s^2) / 0.65 cm k = 1660 N/cm is the </span>spring's effective spring constant
Standard heat of formation is the heat change that deals with the formation of 1mole at standard rates and states of the given reactants . Standard heat of formation is the difference between the enthalpy change of reactants and products.
