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Physics, 01.05.2021 01:00 AllenTTG

Three liquids are at temperatures of 13°C, 19°C, and 40°C respectively. Equal masses of the first two liquids are mixed, and the equilibrium temperature is 15°C. Equal masses of the second and the third are then mixed, and the equilibrium temperature is 36.9°C. Find the equilibrium temperature when equal masses of the first and third are mixed.
Answer in units of °C.

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