Question

Kareem heats a beaker of water to a boil. Then he records that the water temperature decreases from 100°C to 19°C in 5 and 2/5 minutes.

What was the change in temperature each minute? Enter your answer in the box.

Answer 1

Explanation:

2/5min=24 sec

5 min=300 sec

total=324 seconds

the water decreased 100-19=81 degrees

81/324=0.25 degrees/second

the change in temperature was 0.25 degrees per second

we will multiply by 60

15 degrees per minute