What is the relationship between the classification of a reaction as endothermic or exothermic and the enthalpy of the reaction?

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

Which of the following molecules is polar? c3h7oh c2h5cooh