Final answer:
The student's inquiry is about the application of a coffee-cup calorimeter to measure heat transfer during the mixing of water and HCI with different initial temperatures, which is analyzed using the principles of calorimetry.
Step-by-step explanation:
The student's question pertains to the use of a coffee-cup calorimeter for measuring the heat of a reaction involving mixing water and HCI at different temperatures. In calorimetry, one often measures the heat transfer associated with chemical reactions or physical changes, such as temperature changes between substances. In this particular scenario, we are mixing two substances with different initial temperatures and determining the resulting temperature to understand the heat exchanged. This process involves concepts such as the specific heat of water, heat capacity, and the calorimetry equation q = mcΔT, where q represents the heat transfer, m is the mass of the water, c is the specific heat capacity, and ΔT is the change in temperature.