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Economic threoy
Weegy: Mainstream economic theory relies upon a priori quantitative economic models, which employ a variety of concepts. [ Theory typically proceeds with an assumption of ceteris paribus, which means holding constant explanatory variables other than the one under consideration. When creating theories, the objective is to find ones which are at least as simple in information requirements, more precise in predictions, and more fruitful in generating additional research than prior theories.[74] In microeconomics, principal concepts include supply and demand, marginalism, rational choice theory, opportunity cost, budget constraints, utility, and the theory of the firm.[75][76] Early macroeconomic models focused on modeling the relationships between aggregate variables, but as the relationships appeared to change over time macroeconomists were pressured to base their models in microfoundations. The aforementioned microeconomic concepts play a major part in macroeconomic models – for instance, in monetary theory, the quantity theory of money predicts that increases in the money supply increase inflation, and inflation is assumed to be influenced by rational expectations. In development economics, slower growth in developed nations has been sometimes predicted because of the declining marginal returns of investment and capital, and this has been observed in the Four Asian Tigers. Sometimes an economic hypothesis is only qualitative, not quantitative.[77] Expositions of economic reasoning often use two-dimensional graphs to illustrate theoretical relationships. At a higher level of generality, Paul Samuelson's treatise Foundations of Economic Analysis (1947) used mathematical methods to represent the theory, particularly as to maximizing behavioral relations of agents reaching equilibrium. The book focused on examining the class of statements called operationally meaningful theorems in economics, which are theorems that can conceivably be refuted by empirical data.[78] ] ... (More)
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Asked 7/31/2012 8:33:14 AM
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Pls i need 2 sure for Clubmaster and Lucky G
Weegy: Weegy is not a psychic and cannot predict the future. (More)
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Asked 7/31/2012 9:38:44 AM
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What is atomic mass of iron
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Updated 7/31/2012 12:42:22 PM
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the standard atomic weight of iron is 55.847 g/mol, and therefore one mole of iron as commonly found on earth has a mass of 55.847 grams. en.wikipedia.org/wiki/Atomic_mass
Added 7/31/2012 12:42:22 PM
Does the concept of hybridization explain fully the tetravalency of carbon?
Weegy: Hybridization Carbon is an essential element of organic compounds, it has four electrons in its outer most shell. According to the ground state electronic configuration of carbon, it is divalent. [ Tetravalency of carbon can be explained by promoting one of the 2s2 - electrons to the unocupied 2ps1 atomic orbital. The four valencies of carbon atom are similar and they are symmetrically arranged around the carbon atom. According to Le Bell and Van’t Hoff the four valencies of carbon do not lie in one plane. They are directed towards the corners of a regular tetrahedron with carbon atom at the centre and the angle between any two valencies is 109o28¢. Hybridization in Organic Compounds (1) The process of mixing atomic orbitals to form a set of new equivalent orbitals is termed ashybridization. There are three types of hybridization, www.transtutors.com/chemistry-homework-help/general-organic-chemistry/hybridization-in-organic-compounds.aspx ] (More)
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Asked 7/31/2012 3:45:49 PM
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