A 406.0 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar?
(The specific heat for copper is 386 J/kg ? K, the heat of fusion for copper is 205 kJ/kg, and its melting point is 1357 K.)
A) 2.49 × 105 kJ
B) 1.66 × 1011 kJ
C) 1.66 × 108 kJ
D) 2.96 × 105 kJ
Answer: A
You might also like to view...
If life exists on Mars today it will most likely be found
A) everywhere—on the surface, beneath the surface, and in its atmosphere B) on the surface C) beneath the surface D) in its atmosphere
An antinode in a standing wave is the location that appears to ________ (describe behavior) from equilibrium.
What will be an ideal response?
Why modify the Grashof number for inclined surfaces?
What will be an ideal response?
Thermodynamic Processes: When a gas expands adiabatically,
A. the internal (thermal) energy of the gas decreases. B. the internal (thermal) energy of the gas increases. C. it does no work. D. work is done on the gas. E. the temperature of the gas remains constant.