Which equation describes a reduction? Mg(s) —> Mg2+ (aq) + 2e-
2CI + 2e-201-
Na(s) —> Na+ (aq) + e-
Al(s) —>A13+ (aq) + 3e

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume

Which change to the system wood cause the freely-moving piston to lower?

Astudent uses universal ph paper to find the ph of three solutions . solution a has a ph of 5 solution b has a ph of 11 and solution c has a ph of 7 identify which solution is acidic which solution is neutral and which solution is basic