Which of the following would you predict to have a positive value for º ?

agcl(s) → ag+(aq) + cl-(aq)

h2o(g) → h2o(l)

2 na(s) + cl2(g) → 2nacl(s)

br2(l) → br2(s)

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong