To use radioactive dating far a substance you must know the substance

If the element whose electric configuration ends in the d sublevel, the element is calssified as? a.inner transition b.noble gases c.representative d. transition

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

What two categories of toxins were present in the air at dish,texas as a result of the gas pipelines that pass through the area