Question

(help pls) A piece of nickel at 25 °C is dropped into a glass of water at 25 °C. Which statement is correct?

a.) Heat will flow from the nickel to the water in the glass.
b.) Heat will flow from the water in the glass to the nickel.
c.) There will be no transfer of heat from the nickel to the water in the glass.
d.) The final temperature of water and nickel will be 0 °C.

Answer 1

When the piece of nickel at 25°C is dropped into the glass of water at 25°C, heat will flow from the nickel to the water in the glass. This is because the nickel is initially at a higher temperature than the water and so it has more thermal energy. Heat always flows from hotter to cooler objects, so the heat will transfer from the nickel to the water until they both reach the same temperature. Therefore, the correct answer is option a.) Heat will flow from the nickel to the water in the glass.

The final temperature of the water and nickel after they come to equilibrium will be somewhere in between 25°C and the initial temperature of the nickel. It won't necessarily be 0°C since both the water and the nickel are initially warmer than that.