2. A liquid is heated in a lab using a hot plate. The graph of temperature vs. time is as follows. Temperature of Solution

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2. A liquid is heated in a lab using a hot plate. The graph of temperature vs. time is as follows. Temperature of Solution Temperature (C) 888R 8 8 8 8 8 9 110 200 10 20 40 50 60 70 90 Time (min) Answer the following questions using the letters A through D on the graph above. More than one letter may be required for each question. a) Where is the rate of change zero? [5 marks] b) Where is the rate of change changing or not constant? c) Where is the rate of change positive? d) Where is the rate of change greatest?