What does the pH of a solution have to be in order to be a base?

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

What is the main reason why some developing countries fear the increase the free trade policies around the world?

Which statement best explains the relationship between an area is geography and the temperature of its surface water