John dalton believed which of the following about atoms? atoms are real even though they're invisible. all atoms of a single substance are identical. the atom could be divided into smaller parts. atoms of different substances differ by weight.

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

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.