You have 500 grams of water at 80° Celsius. You want to lower the temperature of the water to as close to 60° Celsius as possible. Which of the following would get the 500 grams of water the closest to 60° Celsius?

adding 80 grams of 40° Celsius water

adding 100 grams of 50° Celsius water

adding 250 grams of 60° Celsius water

adding 100 grams of 70° Celsius water

Question

You have 500 grams of water at 80° Celsius. You want to lower the temperature of the water to as close to 60° Celsius as possible. Which of the following would get the 500 grams of water the closest to 60° Celsius?

 adding 80 grams of 40° Celsius water

 adding 100 grams of 50° Celsius water

 adding 250 grams of 60° Celsius water

 adding 100 grams of 70° Celsius water

aaronq · Answer

hmm i'm not sure, try finding how much heat is lost by changing the temperature of the 500 g from 80 to 60.. then do the same for each of the temperatures, see which one matches best.

q=mC(delta)T

aaronq · Answer

and by each of the temperatures i meant options

anonymous · Answer

probably adding 100 grams of 50° Celsius wate