?Write “true” or “false” for each statement. (a) We balance chemical equations as we do because energy must be conserved. (b) If th

Chapter 3, Problem 3.9

(choose chapter or problem)

Write “true” or “false” for each statement.

(a) We balance chemical equations as we do because energy must be conserved.

(b) If the reaction \(2 \mathrm{O}_{3}(g) \rightarrow 3 \mathrm{O}_{2}(g)\) goes to completion and all \(\mathrm{O}_{3}\) is converted to \(\mathrm{O}_{2}\), then the mass of \(\mathrm{O}_{3}\) at the beginning of the reaction must be the same as the mass of \(\mathrm{O}_{2}\) at the end of the reaction.

(c) You can balance the “water-splitting” reaction \(\mathrm{H}_{2} \mathrm{O}(l) \rightarrow \mathrm{H}_{2}(g)+\mathrm{O}_{2}(g)\) by writing it this way: \(\mathrm{H}_{2} \mathrm{O}_{2}(l) \rightarrow \mathrm{H}_{2}(g)+\mathrm{O}_{2}(g)\)

Text Transcription:

2{O}_{3}(g) \rightarrow 3 {O}_{2}(g)

O_3

O_2

{H}_{2}{O}(l) \rightarrow {H}_{2}(g)+ {O}_{2}(g)

{H}_{2}{O}_{2}(l) \rightarrow {H}_{2}(g)+ {O}_{2}(g)