What happens to energy over the course of a reaction?

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

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

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer