Temperature 38971

A zinc body has a volume of 20 dm3. What heat is needed to warm it from a temperature of 25 to 100 degrees Celsius? What is this body's heat capacity C (unit J/K)?

Correct answer:

Q =  4123350 J
C =  54978 J/K

Step-by-step explanation:

V=20 dm3 t1=25 °C t2=100 °C  c=385 J/K/kg ρ=7.14 kg/dm3  m=ρ V=7.14 20=5714=142.8 kg T=t2t1=10025=75 °C  Q=m c T=142.8 385 75=4123350 J
C=Q/T=4123350/75=54978 J/K

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