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Topic: Stoichiometry

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	[No title] (Site not responding. Last check: 2007-10-22)
		In chemistry, stoichiometry is the study of the combination of elements in chemical reactions.
		Stoichiometry (/stoi-kE-'a-m&-trE/) (from Greek stoicheion meaning element or principle, and metron measure) refers to the relative number of atoms of various elements found in a chemical substance and is often useful in characterizing a chemical reaction.
		Stoichiometry rests upon the law of definite proportions (i.e., the law of constant composition) and the law of multiple proportions.
	wikiwhat.com /encyclopedia/s/st/stoichiometry.html (332 words)

	Stoichiometry - Wikipedia, the free encyclopedia
		Stoichiometry (sometimes called reaction stoichiometry to distinguish it from composition stoichiometry) is the calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
		Stoichiometry, as used in chemistry, is related to the term stoichiometric in thermodynamics, which is used to refer to the "perfect mixture" of fuel and air.
		Stoichiometry rests upon the law of conservation of mass, the law of definite proportions (i.e., the law of constant composition) and the law of multiple proportions.
	en.wikipedia.org /wiki/Stoichiometry (588 words)

	Stoichiometry
		You may have learned the term stoichiometry in a chemistry class, referring to the relative quantities of elements in a molecule, or the relative amounts of reactants and products in a chemical reaction.
		Stoichiometry, in its simplest definition, merely refers to the relative proportion of components.
		Furthermore, the elemental stoichiometry of phytoplankton and zooplankton is well studied, allowing for specific predictions about the effects of nutrient loading on zooplankton herbivore communities.
	www.esf.edu /efb/schulz/Stoichiometry.htm (919 words)

	Stoichiometry (Site not responding. Last check: 2007-10-22)
		Stoichiometry is often used to balance chemical For example the two diatomic gases hydrogen and oxygen can combine to form a liquid in an exothermic reaction as described by Equation 1.
		Equation 2 does have proper stoichiometry and therefore said to be a "balanced" equation the same number of atoms of each on each side of the equation.
		The term stoichiometry is also often used the molar proportions of elements in stoichiometric For example the stoichiometry of hydrogen and in H
	www.freeglossary.com /Stoichiometry (399 words)

	stoichiometry
		Stoichiometry, sometimes referred to as chemical arithmetic, deals with numerical relationships between atoms in molecules, and between atoms and molecules in chemical reactions.
		The term stoichiometry was first introduced in the 1790’s by the German chemist Benjamin Richter, who performed numerous experiments in an effort to determine quantitative relationships between reactants and products in chemical reactions.
		Although his experiments and his interpretation of them were flawed, the term stoichiometry slowly gained in acceptance and grew in scope over the next 100 years.
	www.wellesley.edu /Chemistry/chem120/stoichiometry.html (1646 words)

	Stoichiometry
		The term stoichiometry is derived from two Greek words: stoicheion (meaning "element") and metron (meaning "measure").
		Stoichiometry calculations are based on the fact that atoms are conserved.
		Thus, simple stoichiometry at the atomic level appears to be complicated when amounts (quantities) are measured in units of g, kg, L or mL.
	www.science.uwaterloo.ca /~cchieh/cact/c120/stoichio.html (1184 words)

	Chem4Kids.com: Reactions: Stoichiometry
		Stoichiometry is the part of chemistry that studies amounts of substances that are involved in reactions.
		When you use stoichiometry, you can determine amounts of substances needed to fulfill the requirements of the reaction.
		Stoichiometry will tell you that if you have ten million atoms of sodium (Na) and only one atom of chlorine (Cl) you can only make one molecule of sodium chloride (NaCl).
	www.chem4kids.com /files/react_stoichio.html (387 words)

	Stoichiometry Online
		Quantitative stoichiometry will be learned and practiced, including calculations from moles to moles, from moles to grams, and from grams to grams.
		The internet activity is a complement to qualitative and quantitative studies in stoichiometry.
		Another aspect could be commercial chemistry and how stoichiometry plays a significant role in the cost efficiency of a chemical corporation.
	www.gsu.edu /~mstjrh/stoichiometry.html (635 words)

	Stoichiometry Skeletons (Site not responding. Last check: 2007-10-22)
		In teaching stoichiometry, I have noticed that about a third of my students have considerable difficulty understanding the thought processes required to successfully perform the necessary calculations.
		While using the skeletons, each portion of a stoichiometry calculation is performed separately, with that answer being used in the next calculation until a final answer is reached.
		They learn to fill in the proper blanks and work a series of calculations that takes them from their starting box to the ending box (which is their final answer).
	www.thecatalyst.org /forum/wkshtool/skeleton.html (481 words)

	ChemTeam: Stoichiometry: What is it? (Site not responding. Last check: 2007-10-22)
		The word stoichiometry derives from two Greek words: stoicheion (meaning "element") and metron (meaning "measure").
		Stoichiometry deals with calculations about the masses (sometimes volumes) of reactants and products involved in a chemical reaction.
		Jeremias Benjaim Richter (1762-1807) was the first to lay down the principles of stoichiometry.
	dbhs.wvusd.k12.ca.us /webdocs/Stoichiometry/What-is-Stoichiometry.html (285 words)

	Advanced Placement Chemistry (Site not responding. Last check: 2007-10-22)
		Blizman, students with a good understanding of stoichiometry 1 (mole ratio), 2 (mole and mass ratios), 3 (mole ratio, reactant in shortest supply), and 4 (mole/mass ratios with limiting reagent), will really get a jump start in A.P. Chemistry.
		Stoichiometry 1-3 were worksheets with accompanying quizzes in first year chemistry.
		Stoichiometry 4 can be inferred from stoichiometry 1-3, however a worksheet will be published here in the near future.
	www.chemistrycoach.com /advanced_placement_chemistry.htm (78 words)

	Stoichiometry
		Stoichiometry is the division of chemistry devoted to quantitative (numerical) analysis of chemicals, their relationships, and their reactions.
		Stoichiometry makes it possible to determine how much of each reactant is needed to produce a given quantity of product in a reaction, to calculate formulas of compounds from decomposition products, to find volumes of gases under given conditions, to label concentrations of solutions, and much more.
		Regardless, in general, stoichiometry lets chemists predict relatively accurately various properties of a reaction, not the least of which is the amount of product expected.
	www.nitrogenorder.org /lessons/stoich.shtml (5619 words)

	Stoichiometry
		Stoichiometry is the accounting, or math, behind chemistry.
		Given enough information, one can use stoichiometry to calculate masses, moles, and percents within a chemical equation.
		In chemistry, we use symbols to represent the various chemicals.
	www.shodor.org /unchem/basic/stoic (2519 words)

	Stoichiometry
		Stoichiometry is the branch of chemistry and chemical engineering that deals with the quantities of substances that enter into, and are produced by, chemical reactions.
		The method of obtaining these from chemical formulas, equations, atomic weights and molecular weights, and determination of what and how much is used and produced in chemical processes, is the major concern of Stoichiometry.
		ChemTeam: Stoichiometry Why re-invent the wheel when these folk have outlined the subject so well!
	www.chemistry.co.nz /stoichiometry.htm (135 words)

	Limiting Reactants (Site not responding. Last check: 2007-10-22)
		Because the stoichiometry of the reaction is such that 1 mol of O
		The reactant that is completely consumed in a chemical reaction is called the limiting reactant (or limiting reagent) because it determines (or limits) the amount of product formed.
		is the limiting reactant, and because the stoichiometry is 2H
	wine1.sb.fsu.edu /chm1045/notes/Stoich/Limiting/Stoich07.htm (520 words)

	stoichas.htm (Site not responding. Last check: 2007-10-22)
		Most stoichiometry problems follow a set strategy which revolves around the mole.
		Now that you know how to convert grams to mols, mols A to mols B, and mols to grams, you can utilize the entire strategy, Quantity A --> mols A --> mols B --> Quantity B to work a typical stoichiometry problem encountered in which the theoretical yield of a substance is calculated.
		The theoretical yield represents the maximum amount of a product that may be produced from a given set of reactants.
	www.towson.edu /~ladon/stoichas.html (1014 words)

	stoichiometry
		Purpose: To confirm the stoichiometry of a precipitation reaction and to use the reaction to determine the concentration of an unknown.
		In those solutions where NaCl is limiting, the stoichiometry of the reaction predicts that the amount of AgCl formed is equal to the amount of NaCl added.
		Thus, the slope of line AB is one.
	wwwchem.csustan.edu /chem1102/stoichio.htm (1191 words)

	Stoichiometry
		Again, the amount of each product is limited by the amount of carbon and hydrogen in the sample (oxygen is in excess and is provided by the experimenter) The combustion reaction stoichiometry is then a useful way of identifying at least the constituency of an unknown.
		With a simple understanding of reaction stoichiometry, we can predict the outcome of chemical transformations.
		First and foremost, remember that reaction stoichiometry relates the number of moles(molecules) of reactants and products, and not the relative masses (except by calculation).
	www.chem.ufl.edu /~itl/2045/lectures/lec_4.html (774 words)

	Solution Stoichiometry (Site not responding. Last check: 2007-10-22)
		The concentration of the solute in this second solution is known.
		The phenolphthalein indicator dye begins to turn color after the addition of 2.8 mls of standard solution.
		Since the stoichiometry of the NaOH and HCl is 1:1, the sample of HCl must have contained 0.0014 moles of HCl.
	wine1.sb.fsu.edu /chm1045/notes/Aqueous/Stoich/Aqua02.htm (391 words)

	PHSchool - AP* Lesson Plans
		The latest versions of browsers such as Internet Explorer and Netscape can be downloaded for free from the Web.
		Reaction Stoichiometry and Limiting Reactants will require at least two blocks, as will Solution Concentration and Solution Stoichiometry.
		Reaction stoichiometry requires a correct, balanced chemical equation.
	www.phschool.com /advanced/lesson_plans/chem_brown_2003/week03-04.html (525 words)

	Chemical Equation Balancing and Stoichiometry calculator
		EBAS - Chemical Equation Balancing and Stoichiometry calculator - is a program for fast and easy chemical equations balancing and stoichiometry calculations.
		As with all our programs, the Equation Balancing and Stoichiometry calculator was designed to save you time spent on tedious tasks.
		Using chemical Equation Balancing and Stoichiometry calculator you will finish most stoichiometry calculations in less then a minute.
	www.chembuddy.com /?left=EBAS&right=equation-balancing-stoichiometry (313 words)

	Stoichiometry Rocks! (Site not responding. Last check: 2007-10-22)
		Use the six steps to solve mass-mass problems.
		Use stoichiometry to determine the limiting reactant in a chemical reaction
		The most common type of stoichiometry calculation is a mass-mass problem.
	www.gchs.com /teachers/mhaight/stoichrocks.htm (347 words)

	COTW03_1
		The purpose of this chapter is to describe the concepts of stoichiometry [pronunciation: stoy-key-ahm'-eh-tree; from the Greek stoicheion (element) and metron (to measure).] Stoichiometry is the area of chemistry which deals with quantitative relationships in chemical reactions.
		It is the area which allows chemists to know how much starting material is needed to produce a million pounds of sulfuric acid or how many molecules are in a microgram of a particular hormone.
		If you answered 15,000 atoms, you understand the basics of stoichiometry.
	www2.yk.psu.edu /~jhb3/cotw03_1.htm (4635 words)

	Chemical calculator - general chemistry software
		And that's not all - our general chemistry software can calculate dilutions, titration curves, endpoints pH, calculate ionic strength of the solution, activity coefficients and so on.
		Check out CASC - Concentration and Solution Calculator, BATE - Base Acid Titration and Equilibria and EBAS - Equation Balancing and Stoichiometry calculator.
		To read more about these chemical calculators select them on the left menu to browse through examples, screenshots and other information.
	www.chembuddy.com (465 words)

	SparkNotes: Introduction to Stoichiometry
		Home : Math & Science : Chemistry Study Guides : Stoichiometry : Intro
		Ask a question or start a discussion on the SparkNotes community boards.
		SparkNotes Study Cards boil down Organic Chemistry into digestible tidbits, making studying easier.
	www.sparknotes.com /chemistry/stoichiometry/intro (54 words)

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