Which of the following is an example of a chemical reaction? A. breaking a glass
B. dissolving salt into water
C. freezing water
D. lighting a match

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

Think about how you can use le chatelier’s principle to find possible solutions to the design problem. describe at least two ways to increase the yield (amount) of ammonia based on this principle.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change