A student heats a beaker containing ice and water. He measures the temperature of the beaker as a function of time and draws the following graph. i) What does the curve a, b represent? ii) What happens after 25 minutes? iii) What does the curve b, c represent? iv) at what temperature and time ice melts?

A student heats a beaker containing ice and water. He measures the t

1.	A student heats a beaker containing ice and water. He measures the temperature of the beaker as a function of time and draws the following graph. i) What does the curve a, b represent? ii) What happens after 25 minutes? iii) What does the curve b, c represent? iv) at what temperature and time ice melts?
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