What volume of water at o°c can a freezer make into ice cubes in 1.0 h, if the coefficient of performance of the cooling unit is 6.0 and the power input is 1.7 kilowatt? express your answer to two significant figures and include the appropriate units.

volume of water is 0.1092 m3

Explanation:

We know that heat energy required to convert water into ice is given as

Q =mL

where L is Latent heat of fusion of ice is 336000 Jkg-1

           =1000*V

Q = 1000V*336*10^3

   Q = 336*10^6 V

ENERGY used by the freezer is given as

= 6.0*1.7*10^3 W = 10,200 w

energy provided per hour is Q = 10,200 W *1*60*60 s = 3.67*10^7 J

THEREFORE we have V

336*10^6 V = 3.67*10^7 j

v = .109 m3

volume of water is 0.1092 m3

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