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30 . Q = m lebur = 2 . 334000 = 668 Kj
dit = Q .... ?
jawab : m.c.ΔT
m.c.(T2-T1)
1.4200.(75-5)
4200.70 = 294000 joule = 294 kj
30. diket : m = 2kg , C es = 334000
dit : Q ... ?
Q = m lebur
= 2 . 334000
= 668 Kj