label each half cell in this diagram of a voltaic cell to identify which electrode it contains and the process occurring at the electrode.
☹️ i don’t understand this

For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above

Light waves travel than sound waves.

Consider the story you just read. all but one of the choices below indicate that something is living.