This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

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2\frac{1}{2}$ minutes.
Hey Pretty~Nelly — ready when you are.
a) I cannot draw on the graph. You would need to plot your experimental data and then draw two best-fit straight lines: one for the initial temperature before adding sodium carbonate and another for the cooling of the solution after the reaction. Extrapolate these lines to minutes.
b) To find the theoretical temperature rise () at minutes, you would read the temperature from the extrapolated initial line at minutes and subtract it from the temperature read from the extrapolated cooling line at minutes. Since the graph
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Hey Pretty~Nelly — ready when you are. a) I cannot draw on the graph.
This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.