Answered: 1. Calculate the length of time a… | bartleby

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1. Calculate the length of time a 950-watt blow dryer would have to blow on an iron pipe (0.75 cm wall thickness) to thaw
a 1.25 kg chunk of ice blocking the flow of water through the pipe. What is the change in entropy of the ice/water?
(The ice is initially at a temperature of 16° F and room temperature is 65° F.)

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4) Please help with the following question (second picture)!
30 grams of ice at -5 Celsius melt while being left at room temperature of 28 Celsius. After melting its temperature rises to 28 Celsius. Determine the total change of entropy of the ice. [Cice = .5 cal/g.C, Lf = 79.6 cal/gram] 1 calorie = 4.184 J Options: A. 49.97 J/K B. 34.68 J/K C. 53.11 J/K D. 38.27 J/K E. 44.22 J/K