Predict the products and write a balanced net ionic equation for the following reactions: a. zinc dust is treated with dilute nitric acid, forming ammonium ions. b. potassium permanganate oxidizes the oxalate ions in calcium oxalate to carbon dioxide in an acidic solution. c. tin(ii) chloride is added to potassium permanganate solution in acidic conditions.

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

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.