Part A
Approximately how long should it take 9.3 kg of ice at 0âC to melt when it is placed in a carefully sealed Styrofoam ice chest of dimensions 25 cm x 35 cm x 55 cm whose walls are 2.0 cm thick? Assume that the conductivity of Styrofoam is double that of air and that the outside temperature is 35âC.
Express your answer using two significant figures.