Will pay for somebody to finish a week's worth of history and economics lessons. i will pay $100 via paypal, but the price is certainly negociable. an 80 or higher would be much ! (also 95 points ayy)

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