Michael asks…What is the equation for the flat part in the heating cooling curve?I know the equation for the sloped part of the heating cooling curve for water is Q=m x s x delta T, but what's the equation for the flat part?Nancy answers:For the melting portion the equation is Q = mHf, where Hf is the heat of fusion of the substance in J/g.
For the boiling portion(vaporization portion) of the heating/cooling curve the equation is Q = mHv.
Each of these two parts are temperature independent
