Calculate the pH after 0.15 mole of NaOH is added to 1.07 L of a solution that is 0.50 M HC3H5O3 and 1.08 M KC3H5O3, and calculate the pH after 0.30 mole of HCl is added to 1.07 L of the same solution of HC3H5O3 and KC3H5O3.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.