During each cycle of operation a refrigerator absorbs 56 cal from the freezer compartment and expels 81 cal tothe room. if one cycle occurs every 10 s, how many minutes will it take to freeze 570 g of water, initially at 0°c? (lv = 80 cal/g

138.18 minutes

Explanation:

= Latent heat of water at 0°C = 80 cal/g

m = Mass of water = 570 g

Heat removed for freezing

Let N be the number of cycles and each cycle removes 56 cal from the freezer.

So,

Each cycle takes 10 seconds so the total time would be

The total time taken to freeze 138.18 minutes

what is the actual question though?