Also known as: PR$, PR., PR-
PR has various meanings in the Chemistry category. Discover the full forms, definitions, and usage contexts of PR in Chemistry.
The normal force exerted by a homogeneous liquid or gas, per unit of area, on the wall of its container. The force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit). The force per unit area acting on a surface. A force being exerted on part of a surface. When you stand, your feet put pressure on the ground.
ChemistrySymbol:"Pr" Atomic Number:"59" Atomic Mass: 140.91amu. Praseodymium is one of the elements in the lanthanide series of inner transition elements. It may also be classified as a rare earth element. This soft, silvery metal can be found in many minerals and even some cigarette lighter sparking mechanisms.
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