Constant. The concentrations must be constant and the rates must be equal.
Atoms of the element beryllium would most likely behave similar to the way d lithium behaves
Cat urine. May sound weird, may get it wrong, but it's true. Your teacher'll freak out.
Iron (II) oxide is composed of iron with an oxidation number of +2 (shown by the II after iron) and an oxygen that has an oxidation number of -2 (oxygen almost always has an oxidation state of -2). Since the anion and cation both have a charge of +or- 2, they bond with each other with a 1 to 1 ratio and the formula should be FeO
I hope this helps. Let me know if anything is unclear.
Answer:
The zebra mussel is a small freshwater mussel.