How Much Energy is Needed to Convert Water to Ice Using a Carnot Refrigerator?

[vincristine]

Homework Statement

a carnot refrigerator takes heat from water at 0 degree celsius and rejects heat to a room at 27 degree celsius. if 50kg of water at 0 degree celsius is converted to ice at 0 degree celsius. how much energy must be supplied to the refrigerator?

Homework Equations

Sorry, i don't know how to do it... Please help me. i have an exam this coming april and one of the question given in their practise set is regarding this matter.

The Attempt at a Solution

Sorry

 

[_wolfgang_]

Ever heard of latent heat? try finding an equation to do with this