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The non-soluble portion of the extracted solid remains in the thimble, and is usually discarded. Like Soxhlet extractor, the Kumagawa extractor has a specific design where the thimble holder/chamber is directly suspended inside the solvent flask (having a vertical large opening) above the boiling solvent.
Atom economy. Atom economy (atom efficiency/percentage) is the conversion efficiency of a chemical process in terms of all atoms involved and the desired products produced. The simplest definition was introduced by Barry Trost in 1991 and is equal to the ratio between the mass of desired product to the total mass of reactants, expressed as a percentage.
The Solow–Swan model or exogenous growth model is an economic model of long-run economic growth.It attempts to explain long-run economic growth by looking at capital accumulation, labor or population growth, and increases in productivity largely driven by technological progress.
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118 chemical elements have been identified and named officially by IUPAC.A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z).
Contemporary economics uses mathematics. Economists draw on the tools of calculus, linear algebra, statistics, game theory, and computer science. [188] Professional economists are expected to be familiar with these tools, while a minority specialise in econometrics and mathematical methods.
When we think of boy bands, acts like the Backstreet Boys and *NSYNC typically come to mind, but the new documentary film Larger Than Life: Reign of the Boybands is a look at the history of boy ...
They build a format where non-all stars get to play against all stars, and shortens the actual game into a tournament where they only have to score 65 points to win," Lillard said in a post to X ...