A piece of solid copper,at 10c is dropped into a graduate cylinder of 100c water.Which statement BEST describes the change in heat energy in this system?
I don't see any choices.
The change in heat energy in this system can be explained by the principle of heat transfer. When the solid copper is dropped into the graduate cylinder of water, heat transfer occurs between the copper and the water until thermal equilibrium is reached.
The statement that BEST describes the change in heat energy in this system is:
"The heat energy from the copper will be transferred to the water, causing an increase in the temperature of the water."
To determine the change in heat energy in this system, we need to consider the energy transfer that occurs when the copper is dropped into the water. This energy transfer can be calculated using the equation:
Q = mcΔT
where Q is the heat energy transferred, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.
In this case, the copper is dropped into the water, so we need to calculate the change in heat energy of both the copper and the water separately.
First, let's consider the change in heat energy of the copper:
Q(copper) = mcΔT(copper)
Since the copper is dropped at 10°C and assuming its initial temperature is also 10°C, ΔT(copper) = 0. Therefore, there is no change in heat energy for the copper in this case (Q(copper) = 0).
Next, let's consider the change in heat energy of the water:
Q(water) = mwΔT(water)
Since the water is initially at 100°C and the copper is at 10°C, ΔT(water) = 100 - 10 = 90°C. The specific heat capacity of water (c) is approximately 4.18 J/g°C.
Therefore, we can calculate the change in heat energy of the water as:
Q(water) = mw * 4.18 * 90
Now, to evaluate the best statement that describes the change in heat energy in the system, we need to compare the magnitudes of Q(copper) and Q(water).
Since Q(copper) is 0, the change in heat energy in this system is primarily determined by Q(water).
Hence, the best statement to describe the change in heat energy in this system is that the water absorbs heat energy from the copper, causing its temperature to rise.