Astudent heats 100 g of aluminum to 60°c. he places it in 100 g of water at 20°c. over time, what will most likely happen?
a. the water's temperature will increase slightly, and the metal's temperature will decrease a lot.
b. the water's temperature will increase a lot, and the metal's temperature will decrease slightly.
c. the water's temperature will decrease slightly, and the metal's temperature will increase a lot.
d. the water's temperature will increase by about the same amount as the metal's temperature decreases.

Option A

Step-by-step explanation:

Given : A student heats 100 g of aluminum to 60°C. He places it in 100 g of water at 20°C.

To find : Over time, what will most likely happen?

Solution :

We know,

Heat will flow out of the warm aluminum and into the cool water.

The final "equilibrium" temperature will be a little less than 40°C (the average of 60° and 20°), because the specific heat of the aluminum is about 8% less than the specific heat of the water.

So when some quantity of heat flows from the aluminum to the water, the temperature of the water rises a little less than the temperature of the aluminum falls.

Therefore, Option A is correct.

The water's temperature will increase slightly, and the metal's temperature will decrease a lot.

answer: 15

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