We are asked to find the energy transferred to the water for different materials.
Recall that the heat transfer equation is given by
[tex]Q=m\cdot c_p\cdot\Delta T[/tex]
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
[tex]\begin{gathered} Q=m\cdot c_p\cdot\Delta T \\ Q=53.9\cdot0.45\cdot32.3 \\ Q=783.4\; J \end{gathered}[/tex]
Therefore, the energy transferred to the water by metal (iron) is 783.4 J
