Question

4. A scientist changes the temperature of a solution at a rate of -7°C per minute. How many minutes will it take for

the solution's temperature to change from 0°C to - 49°C?

Answer 1

7 minutes

Explanation:

The scientist changes the temperature for the solution at a rate of -7°C per minute. We need to find out how long it'll take for the solution's temperature to change from 0°C to -49°C. So, we divide -7 by -49 to find out how long it will take:

-49 / -7 = 7

It will take 7 minutes for the temperature to reach -49°C.