Jawaban:
C. 20°C
Penjelasan:
(C) 20⁰C.
Diketahui :
V1 = 2 L
T1 = 100⁰ C
V2 = 8 L
Tc = 36⁰C
ρ1 = ρ2
c1 = c2
Ditanya :
T2 = ?
Jawab :
Suhu awal air dingin dapat ditentukan dengan konsep Asas Black.
Suhu awal air dingin :
Qlepas = Qterima
m1.c1.ΔT1 = m2.c2.ΔT2
V1.ρ1.(T1 - Tc) = V2.ρ2.(Tc - T1)
V1.(T1 - Tc) = V2.(Tc - T2)
2 . (100 - 36) = 8 . (36 - T2)
2 . 64 = 8 . 36 - 8T2
128 = 288 - 8T2
8T2 = 288 - 128
8T2 = 160
T2 = 160/8
T2 = 20⁰C
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Jawaban:
C. 20°C
Penjelasan:
(C) 20⁰C.
Diketahui :
V1 = 2 L
T1 = 100⁰ C
V2 = 8 L
Tc = 36⁰C
ρ1 = ρ2
c1 = c2
Ditanya :
T2 = ?
Jawab :
Suhu awal air dingin dapat ditentukan dengan konsep Asas Black.
Suhu awal air dingin :
Qlepas = Qterima
m1.c1.ΔT1 = m2.c2.ΔT2
V1.ρ1.(T1 - Tc) = V2.ρ2.(Tc - T1)
V1.(T1 - Tc) = V2.(Tc - T2)
2 . (100 - 36) = 8 . (36 - T2)
2 . 64 = 8 . 36 - 8T2
128 = 288 - 8T2
8T2 = 288 - 128
8T2 = 160
T2 = 160/8
T2 = 20⁰C