What is the ph of a solution with a hydroxide ion, oh−, concentration of 5.4 x 10−4 m?

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 number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Which statement best describes the flow of energy in this scenario