137. Solving a chemistry problem

How does the entropy change when 1 mol of sodium chloride is heated from 25 ° C to 1073 ° K, if its melting point is 800 ° C, the specific heat of fusion is 516.7 J / g. Molar heat capacity (t) = 45.96 16.32 ∙ J / mol ∙ deg.