What was the eastern germany called during the cold war?

Why was hawaii so important to the united states & why did japan bomb pearl harbor?

How could indian agents profit their assignments?

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal