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t=tk-tp
t=2000c-20 c = 1980C
dane
m= 1 kg
c= 130j/kg*k
Q= m*c*t
Q= 1 KG * 130J/KG*K * 1980k=257400 J
2. Ołów paruje w 2000 c
cp=180 j/kg
m= 1 kg
Q=m*cp
Q= 1 kg * 130j/kg = 130 J
257400 J + 130 J = 257530 J