The energy that it takes to melt 2 kg of ice is; 2 kg * 1000 g/kg * 1 mol/18.02 g * 6.03 kJ/mol = 669 kJ. The correct option is C.
What is energy?
Energy is a quantitative value. It is the entity that is used in every reaction because without it no reaction can occur. In animals and plants and other organisms, energy is needed to carry out biological functions.
Mass of ice, m = 2 kg
Molar heat of fusion for ice; [tex]\rm \Delta_fus.H = 6.03 kJ/mol at 0°C.[/tex].
The molar mass of Ice which is water is; 18.02 g/mol
By the formula for calculating energy is:
E = (m/M) * Δ_fus.H
Putting the values in the equation:
E = (2 kg * 1000 g/kg) * 1 mol/18.02 g * 6.03 kJ/mol = 669 kJ
Thus, the correct option is C, 2 kg * 1000 g/kg * 1 mol/18.02 g * 6.03 kJ/mol = 669 kJ.
Learn more about energy, here:
https://brainly.com/question/11239737
#SPJ5
