Question

There are 2 pans of water, one has 10 mL in it and one has 500 mL. You add 3000 joules of energy, which one has the bigger change in temperature?

Answer 1

The change in temperature is bigger for the first pan which contains 10 mL of water.

Step-by-step explanation:

in one pan

mass, m = 10 mL = 10 g

in another pan

mass, m' = 500 mL = 500 g

Heat, H = 3000 J

Specific heat of water, c = 4.2 J/gC

Let the change in temperature in first pan is T and in the second pan is T'.

Use the formula of heat

H = m c T

For the first pan

3000 = 10 x 4.2 x T

T = 71.42 C

For the second pan

3000 = 500 x 4.2 x T'

T' = 1.42 C

So, the change in temperature is bigger for the first pan.