14. By how many degrees will the melting point of aluminum powder with a dispersion of 5*107 m-1 change compared to the melting point of a single crystal of aluminum, if the melting point of aluminum is 660 C, the density is 2700 kg/m3, and the enthalpy of melting is 10.8 kJ/mol. The surface tension of aluminum is 1.14 J/m2.

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