When 155 mL of water at 26°C is mixed with 75 mL of water

Chapter 5, Problem 28P

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QUESTION: Problem 28P

When 155 mL of water at 26°C is mixed with 75 mL of water at 85°C, what is the final temperature? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.)

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QUESTION: Problem 28P

When 155 mL of water at 26°C is mixed with 75 mL of water at 85°C, what is the final temperature? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.)

ANSWER:

Solution 28P:

Here, we are going to determine the final temperature of the surroundings.

Step 1:

The heat capacity is directly related with the temperature change.

Where c is the heat capacity, q is the heat absorbed by the object

m is the mass of the object

 is the change in temperature =(

Therefore,

(=----(1)

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