Question

Question #9859e

Answer 1

Use the formula `Q = m*c*DeltaT` and solve for `DeltaT` - that is the change in temperature.

Explanation:

The formula that applies in such a case is `Q = m*c*DeltaT` where

• Q is positive energy if heat is gained by the mass and negative energy if heat is lost
• m is the mass of the material being heated or cooled
• c is called specific heat - it is a characteristic of the material of the mass
• `DeltaT` is the temperature change from the starting temperature - if negative, the mass was cooled.

For example:
The specific heat of water is about `4.186 (kJ)/(kg*^@K)`. If you gave 4.186 kJ to 1 kg of water, its temperature would increase `1^@K`. A change of `1^@K` is equivalent to a change of `1^@C`.

I hope this helps,
Steve