Which industrial facility is most likely to produce toluene and benzene wastes?
A. A leather tannery
B. A nuclear power plant
C. An iron ore-smelting facility
D. An open-pit mine

The air that we breath is made mostly of which gaseous molecule

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87