Explanation:
The heat (thermal energy) needed in to raise the temperature in a process can be found using the following equation:
[tex]Q=m.C.\Delta T[/tex] (1)
Where:
[tex]Q[/tex] is the heat
[tex]m=8 g[/tex] is the mass of the element (water in this case)
[tex]C[/tex] is the specific heat capacity of the material. In the case of water is [tex]C=4.184\frac{J}{g\°C}[/tex]
[tex]\Delta T=15\°C[/tex] is the variation in temperature (which is increased in this case)
Knowing this, let's rewrite (1) with these values:
[tex]Q=(8 g)(4.184\frac{J}{g\°C})(15\°C)[/tex] (2)
Finally:
[tex]Q=502.08 J[/tex]