How is the bohr atomic model different from the plum-pudding model

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

Calculate the number of molecules present in 0.750 mol of mgo.

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?