B. 55 derajat celcius
C. 35 derajat celcius
D. 40 derajat celcius
(soal ada di gambar)
mohon bantuannya…
A. 15 derajat celcius
diketahui :
m = 0,2 kg
t1 = 25° c
Q = 12.600 J
c air = 4.200 j/kg°c
ditanya :
t2
jawab :
Q = m . c . Δt
Δt = Q / m . c
t2 – t1 = Q / m . c
t2 – 25 = 12.600 / 0,2 x 4.200
t2 – 25 = 12.600 / 840
t2 – 25 = 15
t2 = 25 + 15
t2 = 40° c ————————– ( D )