¿Puede ocurrir una reacción química sin generar cambios visibles?

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

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.

Describe the properties of sodium, chlorine, and sodium chloride