Su enlace es covalente apolar. Explicación: Ambas moléculas se unen para formar un compuesto estable, y alcanzar el "octeto". El selenio tiene 6 electrones de valencia, y le faltaría dos electrones, para tener los 8 electrones, y así, cumplir su octeto, y volverse estable. Por el contrario, el hidrógeno, se va a parecer al elemento noble más estable, el Helio (He), por lo cual, puede compartir sus electrones con el Selenio, así el Hidrógeno tendría 2 electrones, volviéndose estable, y el Selenio 8. Sabiendo lo anterior, podemos calcular si es covalente polar o apolar, con una tabla de electronegatividad, que puedes encontrar en internet. Restas el valor del Selenio al Hidrógeno, y el resultado que te de, lo comparas son los valores de referencia existentes, quedando como: Se(2.6)-H(2.2)= 0.4 Covalente apolar: 0-0.4 Covalente polar: 0.5-1.6
diffusion is the movement of molecules or stuff through the cell membrane
osmosis is the movement of water
water move from high contration to lower concentration
the there is salt outside of the cells the water will move out of the cell membrane and if there is salt inside the cells the water will move into the cell
Hazardous substances are dangerous substances while toxins are poisonous substances. Hazardous substances may cause harm to an individuals health; they include acute toxins such as cyanide; substances harmful after repeated or prolonged exposure such as mercury and silica, among others. Toxic substances can be poisonous or cause health effects.
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During the cell cycle, the centrioles are made during interphase. The centrioles move to opposite sides of the cell and spindle fibers form a bridge between them during prophase, which is one stage out of the four stages in mitosis.
