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massa senyawa = 3,2
Mr = 16
mol = massa/Mr
= 3,2/16
= 0,2 mol
massa air = 500 gram
c = 4,18
DeltaT = 4 derajad celcius
ditanyakan = Delta Hc ?
jawaban...
Q = massa air x c x Delta T
= 500 x 4,18 x 4
= 8360 joule = 8,36 kJ
Delta Hc = -Q/mol
= -8,36/0,2
= 4,18 kJ/mol
semoga dapat membantu yah kak
untuk pertanyaan atau apapun kakak bisa menepost di kolom komentar