Which of the following separation methods is used in refining oil?

chromatography

simple distillation

fractional distillation

filtration

Rohit is trying to tune an instrument

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

Which system of units is used by only a small number of countries in the world, including the u.s.