Answer:
The right answer is option 3.
Explanation:
The minimum amount of heat required to melt ice is:
[tex]Q=m_{ice}\cdot L_{f}[/tex]
Where [tex]m_{ice}[/tex] and [tex]L_{f}[/tex] is the latent heat of fussion, measured in kg and kJ/kg, respectively.
[tex]Q = (0.02\,kg)\cdot (334\,\frac{kJ}{kg} )[/tex]
[tex]Q = 6.68\,kJ\,(6680\,J)[/tex]
The right answer is option 3.
