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m1= 10kg
T= 9stC
Tk=?
deltaT1= x-9stC
ciepło oddane
m2= 2kg
T= 90stC
tk= ?
deltaT2= 90stC-x
Q1=Q2
10kg*(x-9stC) = 2kg*(90stC-x)
10x-90stC=180stC-2x
10x+2x=180stC+90stC
12x=270 /:12
x= 22,5stC
Odp.: Temperatura mieszaniny wynosiła 22,5stC.