Which lab equipment tool would you use to measure exactly 4 ml of water? explain your reasoning

A measuring cylinder (5ml) would be used to measure exactly 4 ml of water because it is the most accurate tool unlike a beaker or conical flask.

the relative standard reduction potential of the half-cell in which reduction occurs; more positive than the other half-cell. reduction is a chemical process in which electrons are added to an atom or an ion; it always occurs accompanied by oxidation of the reducing agent.