How much heat energy is needed to change 10 kg of water at 50°C to steam at 120°C?
A) 4.2 × 105 J
B) 2.3 × 107 J
C) 4.2 × 106 J
D) 3.6 × 106 J
E) 2.5 × 107 J
Correct Answer:
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