Final answer:
The dissolved oxygen level for Estero Coloane bay in Chilean Patagonia cannot be determined without specific environmental data. To calculate the level, one would need to apply Henry's law and convert the concentration from mol/L to mg/L by factoring in the temperature and partial pressure of oxygen present in the bay.
Step-by-step explanation:
The dissolved oxygen level of Estero Coloane bay in Chilean Patagonia is not directly provided by the information given. Instead, to find the dissolved oxygen concentration, we need to consider the examples that deal with Henry's law and converting concentrations from mol/L to mg/L.
The provided information mentions a standard scenario where water at 20°C exposed to atmospheric oxygen has a certain concentration in mol/L. It also refers to the conversion of a dissolved oxygen concentration from mol/L to mg/L, which involves multiplying by the molar mass of oxygen (32 g/mol) and then converting to milligrams. Additionally, it's noted that freshwater trout requires a minimum dissolved oxygen concentration of 7.5 mg/L to thrive.
However, without specific data on temperature and partial pressure of oxygen for Estero Coloane bay or a given concentration, a direct answer to the student's question is not possible. Instead, the student should be instructed on how to apply Henry's law and the conversion between units to determine the required dissolved oxygen level for particular environmental conditions.