. How much heat does it take to melt 2.5 kg of lead when it is at its melting point (m.p. = 327.5°C; Hf = 2.04 × 104 J/kg)?
6.2 × 101 J
8.2 × 103 J
5.1 × 104 J
1.7 × 107 J
2 answers
heat=hf*mass=2.04E4*2.5 J
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