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2 containers are brought in thermal contact and allowed to reach thermal equilibrium. if container 1 initially held 57.9 kg of liquid at a temperature of 237 k, and container 2 initially held 26.7 kg of the same liquid at a temperature of 159 k, then what is their final temperature?

Sagot :

Their final temperature is 303.2K

Container1

Mass m1 = 57.9 kg

temperature = 237k

Container 2

Mass m2 = 26.7 kg

temperature = 159 k

Heat gained by container 1 to reach equilibrium = heat lost by container 2 to reach equilibrium.

m1sΔT = m2sΔT

57.9 × S × (T - 237) = 26.7 × S × (T - 159)

57.9 T - 57.9 ×237 = 26.7T - 26.7 ×159

T = 9477/31.2 = 303.2K

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