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If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.