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ΔT = T₂ - T₁ = 90°C - 10°C = 80°C
c = 920 J/kg°C
Q = 22,5 kJ
Ditanya :
m ?
Jawab :
Q = m.c.ΔT
m = Q / (c.ΔT)
m = 22,5 kJ / (920 J/kg°C × 80°C)
m = 22,5 kJ / 73.600 J/kg
m = 22.500 J / 73.600 J/kg
m = 0,3057 kg
m = 305,7 gram