If you negate reaction 2 and combine the reactions, which substances do not cancel? check all that apply.
-h2
-hcl
-h2o
-mg
-mgo
-mgcl
-o2

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

What would happen to a volleyball left outside in the winter? o o o o a. it would expand. b. it would lose air. c. it would shrink. d. it would explode.

What methods could you use to solubilize calcium carbonate