ICP apec please help asap For a bond to be covalent, the electronegativity difference between the atoms must be: A. positive. B. greater than 1.7. C. less than 1.7. D. negative.

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

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa