PLEASE HELP FAST!! How much energy (in calories) is need to melt 3.0 moles of ice?

20 points+youll be marked brainleist the question is attached in the image

What is the best way to compare a concentrated solution to a dilute solution, given the same volume of solution? a. the concentrated solution has less solute than the dilute solution. b. the concentrated solution has the same amount of solute as the dilute solution. c. the concentrated solution has more solute than the dilute solution. d. the concentrated solution has a different amount of solute than the dilute solution. e. the concentrated solution has the same amount of solute as the dilute solution.

What physical characteristic does the moment of inertia of a rotating object most directly and accurately measure?