experimental error. Is it true or false? a) True b) False tal error. Is it true

Question

experimental error. Is it true or false? a) True b) False tal error. Is it true or false? ton) of a strong acid and a strong base is constant within 4) When 25.0 g of H20 at 80.4°C is added to 100 g H,0 at 24.7°C in a calorimeter (also at 24.7°C), the equilibrium temperature is 35.0°C, a. How much heat is lost to the calorime a) 235J b) 439J c) 36J d) 556J A 34.44 g sample ofan unknown metal heated to 98.6°Cis transferred to 500 mL of H2O t 22.2 C. The equilibrium temperature is 28.3°C. What is the specific heat of the metal? (specific heat of water is 4.18 J/g °C) 5 a) 0.527 J/g·°C b) 1.054 J/g.°C c) 0.85 J/g. C 4 d) 5.274 J/g.°C

Explanation / Answer

Ans 4 : b) 439 J

The heat lost by the hot water will be absorbed by the cold water to raise it's temperature, and the rest of it is absorbed by the calorimeter.

So here :

The heat lost = 25.0 x 4.18 x (80.4 - 35.0)

= 4744.3 J

Heat absorbed = 100 x 4.18 x (35.0 - 24.7)

= 4305.4

Heat absorbed by calorimeter = 4744.3 - 4305.4

= 439 J

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