Question

How do I find the energy transferred to water ?

Answer 1

We are asked to find the energy transferred to the water for different materials.

Recall that the heat transfer equation is given by

`Q=m\cdot c_p\cdot\Delta T`

Where m is the mass, cp is the specific heat capacity of the material, ΔT is the change in the temperature.

For Iron:

The specific heat capacity of iron is 0.45 J/g°C

Mass of iron = 53.9 g

Change in temperature = 32.3 °C

So, the energy released by the metal (iron) is

`\begin{gathered} Q=m\cdot c_p\cdot\Delta T \\ Q=53.9\cdot0.45\cdot32.3 \\ Q=783.4\; J \end{gathered}`

Therefore, the energy transferred to the water by metal (iron) is 783.4 J