Question

A fish dies if placed in water which has been boiled and then allowed to cool. Explain

Answer 1

Answer;

Warm water holds less dissolved oxygen than cold water, so summer is the time when fish can have a hard time getting enough oxygen. ... So on warm summer nights during algal blooms, the dissolved-oxygen concentration sometimes drops too low for the fish, and a die-off can occur.

Boiling water will kill parasites and bacteria but actually make toxic chemicals (such as hard metals, chloramine and other contaminants) worse because they do not evaporate and become more concentrated. (Same amount of chemicals in a smaller volume of water)

Likely due to shock and stress on the fish. The better scenario would have been to mix some of your tank water with the fresh water you boiled and cooled.

Answer 2

Answer:Warm water holds less dissolved oxygen than cold water, so summer is the time when fish can have a hard time getting enough oxygen. ... (Credit: Mike Hooper, USGS)So on warm summer nights during algal blooms, the dissolved-oxygen concentration sometimes drops too low for the fish, and a die-off can occur.

Explanation: