A scientist 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

A. Initial mass of the metal

B. Final mass of the metal

C. Amount of acid used

D. Washing the metal

B (Final mass of the metal)

Explanation:

The independent variable in this experiment is the amount of acid the scientist pours on the metal, and the only variable in the list dependent on the amount of acid poured on the metal is the final mass of the metal. Therefore, the final mass of the metal is the dependent variable in the experiment.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.