Crude oil is separated into different substances such as gasoline, petroleum, diesel fuel, and propane by which process ?
osmosis
chromatography
filtering
fractionation

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution