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Verified answer
Q = m + c × T= 5000 kg × 4200 J/kg°C × (70 - 30)°C
= 5 kg × 4200 J/kg°C × 40° C
= 840.000 J = 840 kJ
◾ Sub materi : Kalor
◾ Mapel : Fisika
◾ Kelas : VII SMP (KTSP)
◾ Keyword : Kalor
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Diketahui :
m = 5000 g = 5 kg
c = 4200 J/kg°c
ΔT = 70-30 = 40°c
Ditanya :
Q = ?
Penyelesaian :
Gunakan rumus umum mencari kalor :
Q = mcΔT
Q = mcΔT
Q = 5 x 4200 x 40
Q = 840.000 J
Q = 840.000 x 0,24 Kal
Q = 201.600 kal
-> Jadi, kalori yg diserap adalah 201.600 kalori
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