Answer to Question #284084 in General Chemistry for Lovely

Question

What is the purpose of starting with the temperature of the water lower than room temperature and ending about the same amount above room temperature?

Answer 1

the air temperature in the room fluctuates back and forth very quickly between two extremes, then the temperature of the water in the bottle will tend to average out those temperature variations, so its temperature extremes will be much closer together (very close to the average ambient temperature).