Select all items that represent characteristics of website navigation menus

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

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.