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A 12.87-g block of solid iron at 68.39 °C is immersed in a 21.10-g pool of...

A 12.87-g block of solid iron at 68.39 °C is immersed in a 21.10-g pool of liquid propylene glycol with a temperature of 12.68 °C. When thermal equilibrium is reached, what is the temperature of the iron and propylene glycol?

Specific heat capacities: iron = 0.444 J/g °C; propylene glycol = 2.50 J/g °C

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