A styrofoam cooler (K = .030 W/mo C) has an average surface area of 0.465 m2 and an average thickness of 2.0 cm. About how long, in seconds will it take for 4.10 kg of ice at 0oC to melt in the cooler if the outside temperature is 28.0oC?(adsbygoogle = window.adsbygoogle || []).push({});

delta Q/delta t = (k*A*deltaT)/d

delta Q = 333 J/g (Lf) *4100 g = 1365300 J

(4186 J/kg*deltaT)*4.1 kg*28 C = 480552.8 J

1365300 J + 480552.8 J = 1845852.8 J = delta Q

1845852.8/delta t = ((.030 W/m C)*(0.465 m^2)*(28 C))/.02 m

Where did I go wrong?! Thanks a lot

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# Homework Help: Heat Conduction

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