A container holds 0.550kg of ice at -15.0 degree celsius. The mass of the contai

Question

A container holds 0.550kg of ice at -15.0 degree celsius. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800.0J/min for 500.0min.


After how many minutes does the ice start to melt?
I got 20.7min(correct answer)

After how many minutes, from the time when the heating is first started, does the temperature begin to rise above 0.00 degree celsius?
I got 251(correct answer)

>>>Question I need help...
Plot the curve showing the temperature as a function of the time elapsed.

Explanation / Answer

The plot will have a straight increasing line starting at t = 0 and T = -15 till the time the ice starts to melt(t = 20.7mins and T=0). After that, till the time the ice does not melt completely(t = 25.1 mins), that is your answer to the second part of the question, there will be a straight line parallel to the time axis. After that the plot will again show a straight line.

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