How much heat is necessary to melt 56.72 grams of substance Y from solid phase at 15 degrees Celsius to liquid at the same temperature?

Melting point of substance Y = 15 degrees Celsius; ∆Hvaporization = 2.83 J/mol; ∆Hfusion = 5.51 J/mol; MWsubstance y = 14.77 g/mol.

21.2 J

3.13 x 102 J

10.9 J

161 J

Question

How much heat is necessary to melt 56.72 grams of substance Y from solid phase at 15 degrees Celsius to liquid at the same temperature?

Melting point of substance Y = 15 degrees Celsius; ∆Hvaporization = 2.83 J/mol; ∆Hfusion = 5.51 J/mol; MWsubstance y = 14.77 g/mol.

 
   
21.2 J
 
   
3.13 x 102 J
 
   
10.9 J
 
   
161 J

joannablackwelder · Answer

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This is the overall idea of adding energy from the solid phase to the gas phase. Any ideas about where we are on the graph for this problem?