An insulated cylinder is fitted with a movable piston to maintain constant pressure. The cylinder initially contains 100 g of ice at –10oC. Heat is supplied to the contents at a constant rate by a 100-W heater. Make a graph showing the temperature of the cylinder contents as a function of time starting at t = 0, when the temperature is –10oC, and ending when the temperature is 110oC. (Use c = 2.0 kJ / kg ∙ K for the average specific heat of ice from –10 to 0oC and of steam from 100 to 110oC.)