Final answer:
To calculate the heat (q) absorbed or released by the brass, the specific heat capacity of brass is required along with the mass and change in temperature. The formula q = mcΔT would be used, with the negative temperature change indicating that heat is being released by the brass.
Step-by-step explanation:
The heat (q) of the brass when it experiences a temperature change can be calculated using the formula q = mcΔT, where m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature. However, we need the specific heat capacity of brass to calculate the heat absorbed or released. Unfortunately, this critical piece of information is not provided in the question. If we had the specific heat of brass, we would plug in the given temperature change, the mass of the brass, and its specific heat capacity to find the heat q in joules (J).
For example, if the specific heat of brass is 0.385 J/g°C, we would calculate the heat as follows:
q = (25.0 g)(0.385 J/g°C)(-283°C) = -2721.375 J.
The negative sign indicates that the brass is releasing heat.