Temperature Analysis from Cooling Curve Graph

In this problem, we need to analyze a temperature versus time graph from a calorimetry experiment to determine the initial and final temperatures of a solution.

Let's start with the initial temperature. Look at the data points before the reaction begins, which is the time before zero seconds.

We can see data points at negative sixty and negative thirty seconds. These points are located halfway between twenty and twenty-five degrees Celsius on the vertical axis.

The value exactly in the middle of twenty and twenty-five is twenty-two point five degrees Celsius. This represents the stable temperature of the solution before mixing.

Now, let's determine the final temperature. In calorimetry, the final temperature is often determined by extrapolating the cooling curve back to the time of mixing, which is time zero.