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solusi : bikin dulu reaksinya, nanti didapat molnya . lalu pake rumus delta H = -Q / n
= -( m c delta T )/ n
= - (massa jenis . volume . c . delta T)/n
= - ( 1 . 100 . 4,2 . 6,5 )/(50 . 10^-3)
=- 54.6 kJ