equatorial bondequatorial quantum numberequilibrationequilibriumequilibrium conditionequilibrium constantequilibrium pointequilibrium positionequilibrium pressureequilibrium stateequilibrium systemequilibrium vapor pressureequilibrtum diagramequimolar solutionsequimolecularequipartition principleequipmentsequivalence pointequivalentequivalent conductanceequivalent conductionequivalent protonsequivalent weightererbiumeriochrome blackerlenmeyer flaskerythritolerythro formesessential amino acidsessential fatty acidsessential oilesterester interchangeesteraseesterificationetchingetherether catalyzed additionethyl ethereueuropiumeutetic pointevaporating dishevaporationevaporation lossevaporative coolingevaporatoreven function