A 4060 Kg Copper Bar Is Put into a Smelter for for Melting

question 63

Multiple Choice

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

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