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09-12-2017
Chemistry

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A 50.0-g sample of liquid water at 25.0 Â°c is mixed with 23.0 g of water at 79.0 Â°c. the final temperature of the water is ________ Â°c.

Respuesta :

371008937 371008937

13-12-2017

m1ΔT1+m2ΔT2=0

m1(Tfl–lT∘1)+m2(Tfl–lT∘2)=0

50.0g×(Tfl–l25.0 °C)+23.0g×(Tfl–l57.0 °C)=0

50.0Tf−1250 °C+23.0Tf – 1311 °C=0

73.0Tf=2561 °C

Tf=2561 °C73.0=35.1 °C

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