. . . . "q_V" . . "Molar Flow Rate is a measure of the amount of substance (the number of molecules) that passes through a given area perpendicular to the flow in a given time. Typically this area is constrained, for example a section through a pipe, but it could also apply to an open flow." . . "https://www.sciencedirect.com/topics/engineering/molar-flow-rate"^^ . . "Molar Flow Rate"@en . .