The following information is given for copper at 1 atm AHvap

The following information is given for copper at 1 atm: AHvap(2567 °C) = 305 kJ/mol AHnd 1083°C) = 13.0 kJ/mol boiling point 2567 °C melting point-1083 °C specific heat solid-0.385 J/gC specific heat liquid = 0.494 J/g°C k, are required to melt a 264 g sample of solid copper, Cu at its normal melting point.

Solution

Answer for 1 question:

26.4g x (0.494-0.385) J/g°C(2567-1083)=  4270.3584 J

Answer for 2nd Question:

36.7 g* (2.32) J/g°C*(34.6-(-116))=  12822.69 J