Una linea de tiempo con todos los hechos y relevancias relativas sobre la radioactividad?

When light strikes a plane mirror, images form in locations where light does not actually reach. it only appears to the observer as though the light were coming from this position. what type of image is formed?

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Which factor is likely to impact the possible number of compounds ?