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A 2.0 kg block of -5.0° C ice is sitting on a surface with negligible conductivity....

A 2.0 kg block of -5.0° C ice is sitting on a surface with negligible conductivity. A heater is located nearby. Assume the following constants Lf = 334 kJ/kg, Lv = 2260 kJ/kg, cice = 2093 J/kg°C, cwater = 4186 J/kg°C, caluminum = 837 J/kg°C.

a.       How much heat is required to melt the ice completely?

b.      You want to vaporize the ice completely.

i.   How much heat is required?

ii.   Construct a temperature vs heat graph for the entire process.

iii.   Label the section of the graph where there is only liquid water.

c.       Assume that the block of ice is melted completely into water and reaches a temperature of 10° C. The water is then placed into a 200 g aluminum cup that is 50° C. What will the temperature of the combination be at thermal equilibrium?

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