berapa kalor yang diperlukan agar 5 kg es pada -20 C menjadi uap air seluruhnya pada 120 C ?
ramadhana21
Q1 = m.ces. delta t = 5 . 2100. 20 = 210000 J Q2 = m.L = 5 . 336000 = 1680000 j Q3 = m. cair . delta t = 5. 4200. 100 = 2100000 J Q4 = m. u = 5 . 2268000 = 11340000 J Q = m . Cuap . Delta t = 5 .2100. 20 = 210000 J
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jimmyramadhan3
Diketahui. m = 5 kg ΔT = T₂-T₁=120°C-(-20)°C=140 c = 336000 J/kg°C Q = m x c x ΔT = 5 kg x 140°C x 336000 J/kg°C = 235200000 J = 235200 kj
Q2 = m.L = 5 . 336000 = 1680000 j
Q3 = m. cair . delta t = 5. 4200. 100 = 2100000 J
Q4 = m. u = 5 . 2268000 = 11340000 J
Q = m . Cuap . Delta t = 5 .2100. 20 = 210000 J
m = 5 kg
ΔT = T₂-T₁=120°C-(-20)°C=140
c = 336000 J/kg°C
Q = m x c x ΔT
= 5 kg x 140°C x 336000 J/kg°C
= 235200000 J = 235200 kj