question_answer

2 kg of ice at \[-20{}^\circ C\]is mixed with 5 kg of water at \[20{}^\circ C\]in an insulating vessel having a negligible heat capacity. Calculate the final mass of water (in kg) remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg per\[{}^\circ C\]and \[0.5\text{ }kcal/kg/{}^\circ C\]while the latent heat of fusion of ice is 80 kcal/kg.

Answer:

6