The heat of fusion of a certain metal is 21.3 j/g, and itsheat of vaporization i

Question

The heat of fusion of a certain metal is 21.3 j/g, and itsheat of vaporization is 765.7 j/g. the melting and boiling pointsand are 344.6 degree C and 1516 degree C, respectively. the specific heat of the liquid metal is 0.133 j/g degreeC. how much heat (in kj) is needed to convert 268.2 g of thesolid metal at 344.6 degree C to the vapor at 1516 degree C. The heat of fusion of a certain metal is 21.3 j/g, and itsheat of vaporization is 765.7 j/g. the melting and boiling pointsand are 344.6 degree C and 1516 degree C, respectively. the specific heat of the liquid metal is 0.133 j/g degreeC. how much heat (in kj) is needed to convert 268.2 g of thesolid metal at 344.6 degree C to the vapor at 1516 degree C.

Explanation / Answer

Given data :           Heat of fusion =21.3J.g-1           Heat ofvaporziation = 765.7J.g-1           Meltingpoint = 344.6 0C           Boilingpoint = 1516 0C          Specific heaty of liquid metal= 0.133J.g-1.0C-1 Heat required ,Q = Q1+ Q2 +Q3                            = 268.2g*21.3J.g-1 +268.2g*0.133J.g-1.0C-1 *(1516-344.6)0C+ 268.2g*765.7J.g-1                           = 5712.66 J +41784.540 J +205360.74J                           = 458218.68J Heat required ,Q = Q1+ Q2 +Q3                            = 268.2g*21.3J.g-1 +268.2g*0.133J.g-1.0C-1 *(1516-344.6)0C+ 268.2g*765.7J.g-1                           = 5712.66 J +41784.540 J +205360.74J                           = 458218.68J                           = 458218.68J

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