The absorbance of a dilute aspirin solution (diluted with fecl3) generates an error -- too concentrated. after showing your ta that you cannot determine the absorbance of the solution, the ta tells you to make a new dilute aspirin solution. when making a new solution, should it be more concentrated or less concentrated?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

Need , hurry pls create a superhero out of the element iron, what are its powers and his sidekick ( an element that works well with iron). how was the superhero made and who discovered him