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13.12.2019 •
Chemistry
A19.0g sample of brass, which has a specific heat capacity of 0.375·j*g^−1°c−, is dropped into an insulated container containing 300.0g of water at 20.0°c and a constant pressure of 1atm. the initial temperature of the brass is 81.7°c.
1. assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. be sure your answer has significant digits.
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Ответ:
The final temperature is 20.3 °C
Explanation:
Considering that:-
Heat gain by water = Heat lost by brass
Thus,
Where, negative sign signifies heat loss
Or,
For water:
Mass = 300.0 g
Initial temperature = 20.0 °C
Specific heat of water = 4.184 J/g°C
For brass:
Mass = 19.0 g
Initial temperature = 81.7 °C
Specific heat of water = 0.375 J/g°C
So,
Hence, the final temperature is 20.3 °C
Ответ:
S/15
Step-by-step explanation: