What is the density? is it a metal, nonmetal, or metalloid? what is the mystery element?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Along what geographical feature are most of the oil producing regions located

When rutherford performed his metal foil experiment, he was surprised that most of the alpha particles