Avariable that is manipulated by the scientist in order to answer a testable question is the

What is the molar mass of potassium nitrate, kno3

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.