alleryA 50 g sample with L = 100 kJ kg−1 changes phase. Required heat?
A0.5 kJ
B5 kJ
C50 kJ
D500 kJ
Answer & Solution
Correct answer: B. 5 kJ
Its mass is 0.05 kg, giving Q = 0.05 × 100 = 5 kJ.
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