Final answer:
The necessary information to calculate the approximate temperature at 85.0 kPa in the Purcells is not provided.
Step-by-step explanation:
The approximate temperature at 85.0 kPa in the Purcells can be found using the Clausius-Clapeyron equation. However, the provided information does not include the necessary values to calculate the temperature. For the calculation, we need the boiling point temperature at 85.0 kPa in the Purcells environment. Without that specific information, we cannot accurately determine the approximate temperature at 85.0 kPa in the Purcells.