As union soldiers marched into richmond in 1865, general lee’s army began to receive reinforcements. had only 35,000 men and no food. planned to reclaim their capital city. headed for atlanta in full retreat.

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