*will mark brainliest and give 40 points* * be fully detailed *

the diagram shows the potential energy changes for a reaction pathway.

a curve line graph is shown. the y axis of the graph has the title potential energy. the x axis of the graph has the title reaction pathway. the curve begins at a lower level and ends at a slightly higher level. a vertical line labeled a, starts from the x axis till the beginning of the graph line. a vertical line labeled b starts from the x axis and continues till the peak of the graph. another vertical line labeled c is shown from the x axis till the point where the curve ends.

part 1: does the diagram illustrate an endothermic or an exothermic reaction? give reasons in support of your answer.

part 2: describe how you can determine the total change in enthalpy and activation energy from the diagram and if each is positive or negative.

Part 1: The diagram shows an endothermic reaction.

Part 2: To find total change in enthalpy do C minus A  It will be positive. To find activation energy subtract B minus A. It will be positive.

Explanation:

Part 1: Endothermic. In the diagram A represents the reactants and C represents the products. An endothermic reaction absorbs energy, meaning it has more energy at the end than at the beginning. C is higher up on the diagram than A and represents more energy, while also representing the result of the reaction.

Part 2: To find total change in enthalpy do C minus A (or products minus reactants). It will be positive because C is a greater value than A. To find activation energy subtract B minus A because this will give you the difference between the peak of the curve and A. It will be positive because B is a greater value than A.

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.

answerca air mass;