Which of the following would decrease the ph level of an acidic solution? (2 points) adding a base to the acid increasing the concentration of hydroxide ions decrease the concentration of hydronium ions increasing the number of hydrogen ions

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing