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This is a list of all known publications by Ottaviano Petrucci, an influential Italian printer of the 16th century. Most of these were reprinted several times during Petrucci's life, but in this list only dates of first publication are given.
General chemistry professors have been known to make tests worth a large portion of the course, and make them more challenging than the material presents itself as. Grade deflation, purposely adjusting the grades of a course to be lower, is also an issue of general chemistry courses at the undergraduate level.
The solubility of a specific solute in a specific solvent is generally expressed as the concentration of a saturated solution of the two. [1] Any of the several ways of expressing concentration of solutions can be used, such as the mass, volume, or amount in moles of the solute for a specific mass, volume, or mole amount of the solvent or of the solution.
Colors of a single chemical in different solvents, under visible and UV light, showing how the chemical interacts dynamically with its solvent environmentIn addition to the generic definition offered above, there are several niche fields where the term "chemical substance" may take alternate usages that are widely accepted, some of which are outlined in the sections below.
For a diluted solution in the gas or the liquid phase, the collision equation developed for neat gas is not suitable when diffusion takes control of the collision frequency, i.e., the direct collision between the two molecules no longer dominates. For any given molecule A, it has to collide with a lot of solvent molecules, let's say molecule C ...
This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.
Ottaviano Petrucci (Fossombrone, 18 June 1466 – Venice, 7 May 1539) was an Italian printer. His Harmonice Musices Odhecaton, a collection of chansons printed in 1501, is commonly misidentified as the first book of sheet music printed from movable type. Actually that distinction belongs to the Roman printer Ulrich Han's Missale Romanum of 1476 ...