You have a 1.55 kg block of silver at room temperature of 20 °C. Silver melts at 962°C. How much heat energy would be needed to just melt the silver? (Hf (silver) = 111 kJ/kg). Show all work. Answer:

Question

Jackrabbit

Physics

27 January, 17:27

You have a 1.55 kg block of silver at room temperature of 20 °C. Silver melts at 962°C. How much heat energy would be needed to just melt the silver? (Hf (silver) = 111 kJ/kg). Show all work. Answer:

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Keagan Hebert · Answer 1

Specific heat capacity = heat energy/mass*temperature rise

962°C - 20°C = 942K

Heat energy (Eh) = 239 * 1.55 * 942

Eh = 348963.9J

shc of Ag: 238.6 J/kg-K

m of Ag: 1.55kg