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When 155 mL of water at 26°C is mixed with 75 mL of water
Chapter 5, Problem 28P(choose chapter or problem)
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.)
Questions & Answers
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)