Measuring instantaneous rates is the most direct way of determining the rate law of a reaction, but it is not always convenient, and it may not be possible to do so with precision.
piece (pÄs) n. 1. A thing considered as a unit or an element of a larger thing, quantity, or class; a portion: a piece of string. 2. A portion or part that has been separated from a whole: a piece of pie. 3. An object that is one member of a group or class: a piece of furniture.
A section is, a major structural unit perceived as the result of the coincidence of relatively large numbers of structural phenomena.. An episode may also refer to a section. A passage is a musical idea that may or may not be complete or independent. For example, fill, riff, and all sections.Musical material is any musical idea, complete or not, independent or not, including motifs. passage is a musical idea that may or may not be complete or independent. For example, fill, riff, and all sections. Musical material is any musical idea, complete or not, independent or not, including motifs.