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=0,5. 2100. 20
=21.000 j
Q2=m.L
=0,5. 336.000
=168.000 j
Q3=m.c.ΔT
=0,5 . 4200. 60
=126.000 j
Total=126.000+168.000+21.000
=315.000 joule
=315 kJ
m= 500g= 0,5 kg
c air= 4200 j/kgC
t2= 60
t1= -20
Dit= Q..?
Q= m .c .Δt
Q= 0,5. 4200. (60-(-20))
Q= 0,5. 4200. 80
Q= 168.000 J/kgC
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