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QUESTION 2 4 pointsSave Answer Temperature vs. time for a reaction 27 26.5 y-0.0

ID: 945816 • Letter: Q

Question

QUESTION 2 4 pointsSave Answer Temperature vs. time for a reaction 27 26.5 y-0.0679x+26.554 R0.9401 26 25.5 2S 24.5 24 23.5 23 22.5 10 12 14 Time (minutes) reaction startedat 3 minutes The graph above shows the record of temperature in the calorimeter for a chemical reaction. Select the statement from the choices below that best describes how to find the temperature change that is due to the chemical reaction taking place. The final temperature is 26.3 °C and is measured where the trend line for the cooling trend after the reaction has finished crosses the time of mixing line at 3 minutes The initial temperature is 22.3 °C and is measured at the time of mixing The final temperature is 25.9 °C and is measured as the average temperature for all the temperature readings after the reaction has finished The initial temperature is 22.3 °C and is measured at the time 0 minutes The final temperature is 26.1 °C and is measured where temperature reaches the maximum temperature after the reaction has started The initial temperature is 22.3 °C and is measured at the time of mixing The final temperature is 26.6 °C and is measured where the trend line for the cooling trend after the reaction has finished crosses the y- axis at time 0 minutes. The initial temperature is 22.3 °C and is measured at the time 0 minutes

Explanation / Answer

Answer is point 1.