- published: 08 Sep 2010
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A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name, and it contains no words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulas can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than are chemical names and structural formulas.
The simplest types of chemical formulas are called empirical formulas, which use letters and numbers indicating the numerical proportions of atoms of each type. Molecular formulas indicate the simple numbers of each type of atom in a molecule, with no information on structure. For example, the empirical formula for glucose is CH_{2}O (twice as many hydrogen atoms as carbon and oxygen), while its molecular formula is C_{6}H_{12}O_{6} (12 hydrogen atoms, six carbon and oxygen atoms).
In science, a formula is a concise way of expressing information symbolically as in a mathematical or chemical formula. The informal use of the term formula in science refers to the general construct of a relationship between given quantities. The plural of formula can be spelled either as formulas or formulae (from the original Latin).
In mathematics, a formula is an entity constructed using the symbols and formation rules of a given logical language. For example, determining the volume of a sphere requires a significant amount of integral calculus or its geometrical analogue, the method of exhaustion; but, having done this once in terms of some parameter (the radius for example), mathematicians have produced a formula to describe the volume: This particular formula is:
Having obtained this result, and knowing the radius of any sphere in question, we can quickly and easily determine its volume. Note that the volume V and the radius r are expressed as single letters instead of words or phrases. This convention, while less important in a relatively simple formula, means that mathematicians can more quickly manipulate larger and more complex formulas. Mathematical formulas are often algebraic, closed form, and/or analytical.
In elementary algebra, the quadratic formula is the solution of the quadratic equation. There are other ways to solve the quadratic equation instead of using the quadratic formula, such as factoring, completing the square, or graphing. Using the quadratic formula is often the most convenient way.
The general quadratic equation is
Here x represents an unknown, while a, b, and c are constants with a not equal to 0. One can verify that the quadratic formula satisfies the quadratic equation, by inserting the former into the latter. Each of the solutions given by the quadratic formula is called a root of the quadratic equation.
Geometrically, these roots represent the x values at which any parabola, explicitly given as y = ax^{2} + bx + c, crosses the x-axis. As well as being a formula that will yield the zeros of any parabola, the quadratic equation will give the axis of symmetry of the parabola, and it can be used to immediately determine how many zeros to expect the parabola to have.
The General or The Generals may refer to:
Arithmetic Sequences: Finding a General Formula Given Two Terms. In this video, we have values for a_21 and a_51 and we have to find the general formula for the arithmetic sequence: a_n.
Hola, en este video les dejo la formula general expliucada de una forma super sencilla y moderna, espero y les sirva, recuerden que pueden ver el video las veces que sea necesario para entender el tema. Sígueme en mis redes sociales!! Contacto/Negocios/Prensa: luisdanielcarreonbaylon@gmail.comFACEBOOK: https://www.facebook.com/carrrrreon?r...TWITTER: https://twitter.com/ProfeCarreon Sígueme en mis círculos: https://plus.google.com/u/0/+LuisDani... SUSCRIBETE!!!
► My Sequences & Series course: https://www.kristakingmath.com/sequences-and-series-course Learn how to use a list of the first several terms of the sequence to find a formula for the general term of the sequence, a_n ● ● ● GET EXTRA HELP ● ● ● If you could use some extra help with your math class, then check out Krista’s website // http://www.kristakingmath.com ● ● ● CONNECT WITH KRISTA ● ● ● Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;) Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!” So I started tut...
Álgebra - Capítulo 10 - Ecuaciones cuadráticas (playlist): https://www.youtube.com/playlist?list=PLEwR-RTQiRPVQdDRnLLmUtrE5pPA8IK_b SUSCRÍBETE: http://bit.ly/VN7586 (NO OLVIDES DAR UN ¨LIKE¨) VISITA: http://math2me.com FB: http://bit.ly/FBmath2me G+: http://google.com/+math2me Twitter: http://bit.ly/14ql1b7 (Video explicado por José Andalón) Help us caption & translate this video! http://amara.org/v/FPMg/
Alkanes, alkenes ,alkynes, alcohols, aldehydes, ketones, carboxylic acids.
#julioprofe explica cómo resolver una ecuación cuadrática utilizando la Fórmula Cuadrática. REDES SOCIALES Facebook → https://www.facebook.com/julioprofenet Twitter → https://twitter.com/julioprofenet Instagram → https://www.instagram.com/julioprofenet SITIO OFICIAL → http://www.julioprofe.net APP JULIOPROFE Para Android → https://goo.gl/XsJRwN Para iOS → https://goo.gl/3y2VtR
For more videos and interactive applets, please visit http://www.MathVillage.info Learn how to write a formula for finding the nth term when given an arithmetic sequence.
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Geometric Sequences: A Formula for the' n - th ' Term. In this video, I derive the formula to find the 'n-th' term of a geometric sequence by considering an example. I then use the formula to find another term of the sequence.
What is general relativity? When physicists talk about Einstein's equation they don't usually mean the famous E=mc2, but another formula, which encapsulates the celebrated general theory of relativity. Einstein published that theory a hundred years ago, in 1915. To celebrate its centenary Plus (plus.maths.org), our free online mathematics magazine, asked physicist Professor David Tong of the University of Cambridge to explain what general relativity is and how Einstein's equation expresses it. Watch his explanation in this video, or read more in his article on Plus at https://plus.maths.org/content/what-general-relativity
CLASS 10 | GENERAL FORMULA OF ALKANE, ALKENE, ALKYNE | TX ACADEMY
The general formula for solving quadratic equations. If you like what you see, please subscribe to this channel! http://www.youtube.com/subscription_center?add_user=numberskill For more videos, please visit http://www.numberskill.com/board-casts-on-youtube/#Bookmark Like us on Facebook http://www.facebook.com/garyang.math Follow us on Google+ https://plus.google.com/117074002101017934426/posts
This video explains how to find the general formula for a sequence in fraction form. (Arithmetic/Geometric) http://mathispower4u.com
Any equation of the form Ax + By + C = 0, with A and B are not zero, simultaneously, is called the general linear equation or general equation of a line
Se obtiene la derivada de la funcion x^3-1 usando la regla o formula general de derivacion, usando 4 pasos
We will talk about what empirical formula and molecular formula are, how they are different, and we'll learn how to write the empirical formula for a compound when you are given the molecular formula. Molecular formulas tell you how many atoms of each element are in a compound, and empirical formulas tell you the simplest or most reduced ratio of elements in a compound. If a compound's molecular formula cannot be reduced any more, then the empirical formula is the same as the molecular formula. Also, many compounds with different molecular formula have the same empirical formula.
Hard to explain this in text -- just watch the video!
Explains the 'general form' of quadratic equations, and how that is used to understand the quadratic formula
The general term of a binomial expansion, also known as the (r+1)th term. The general term formula allows you to find a specific term inside a binomial expansion without the need to fully expand the series. It is useful to find a specific term with a specific power inside a binomial expansion. For example find the term with x^3 in (x^2 + 1/2x)^9. If you like what you see, please subscribe to this channel! http://www.youtube.com/subscription_center?add_user=numberskill For more videos, please visit http://www.numberskill.com/board-casts-on-youtube/#Bookmark Like us on Facebook http://www.facebook.com/garyang.math Follow us on Google+ https://plus.google.com/117074002101017934426/posts
This general chemistry video tutorial provides a formula sheet / list of equations. It focuses on all the equations, variables, and constants that you need to know to help you with the mcat, dat, pcat, or your final exam in general or ap chemistry. Here is a list of topics: 1. Molarity, Molality, and Mass Percent Concentration Equations 2. Colligative Properties - Boiling Point Elevation Formula and Freezing Point Depression 3. Solute, Solvent, and Solution Relationship 4. Osmotic Pressure Equation and Van't Hoff Factor 5. How To Calculate The Vapor Pressure of a Solution Using Mole Fraction 6. Vapor Pressure of Solution With Two Volatile Components - Dalton's Law of Partial Pressure 7. The Relationship Between Vapor Pressure and Temperature - Clausius - Clayperon Equation - Entha...
What is general relativity? When physicists talk about Einstein's equation they don't usually mean the famous E=mc2, but another formula, which encapsulates the celebrated general theory of relativity. Einstein published that theory a hundred years ago, in 1915. To celebrate its centenary Plus (plus.maths.org), our free online mathematics magazine, asked physicist Professor David Tong of the University of Cambridge to explain what general relativity is and how Einstein's equation expresses it. Watch his explanation in this video, or read more in his article on Plus at https://plus.maths.org/content/what-general-relativity
In this video, we will discover how to rotate any vector through any axis by breaking up a vector into a parallel part and a perpendicular part. Then, we will use vector analysis (cross products and dot products) to derive the Rodrigues rotation formula and finish with a quaternion point of view. Using quaternions allows us to write a very compact formula which will be familiar to those who have used quaternions to do rotations.
This Sutra is a General Formula applicable to all cases of multiplication. The applications of this brief and terse Sutra are manifold. In this video we are taking it up in its most elementary application namely, to multiplication in general.
Chapter 5 The largest distinction between the two forms appears through the result of each. During C-M-C, a commodity sold will be replaced by a commodity bought. In this form money only acts as a means of exchange. The transaction ends there, with the exchange of use-values and the money has, according to Marx, "been spent once and for all." The C-M-C form facilitates the exchange of one use-value for another. On the contrary, during M-C-M, money is essentially exchanged for more money. The person who invested money into a commodity sells it for money. The money returns to the initial starting place, so the money is not spent, as in the C-M-C form of exchange, but instead advanced. The only function of this process lies in its ability to valorize. By withdrawing more money from circula...
The basic physics of a black hole, the Schwarzschild radius, energy, temperature, mass and entropy and Hawking radiation
Einstein's Field Equations for General Relativity - including the Metric Tensor, Christoffel symbols, Ricci Cuvature Tensor, Curvature Scalar, Stress Energy Momentum Tensor and Cosmological Constant.
http://www.MathsGrinds.ie (C) Copyright Stephen Easley-Walsh. All rights reserved.
General Relativity & curved space time: Visualization of Christoffel symbols, Riemann curvature tensor, and all the terms in Einstein's Field Equations. My Patreon page is at https://www.patreon.com/EugeneK
This algebra 1 and 2 video provides an overview of arithmetic sequence geometric series. It provides plenty of examples and practice problems that will help you to prepare for your next test or exam in your algebra or pre-calculus course. Here is a list of topics covered in this video: 1. General Formula Sheet For Arithmetic and Geometric Series 2. How To Write The First Four Terms of a Sequence Given The Explicit Formula 3. How To Write The Next Three Terms Given a Recursive Formula / Equation 4. How To Determine if a Sequence is Arithmetic or Geometric 5. How To Find The Common Difference of an Arithmetic Series 6. How To Find The Common Ratio of a Geometric Sequence 7. How To Write a General Formula For an Arithmetic or a Geometric Sequence That Contains Fractions 8. How To ...
This video tutorial study guide review is for students who are taking their first semester of college general chemistry, IB, or AP Chemistry. Even if you’re studying for the general chemistry section of the MCAT, DAT, PCAT, OAT or SAT Subject chemistry test, this video can help give you a nice overview of all the topics you need to learn in General Chemistry 1. This introduction video contains plenty of examples and practice problems to help prepare you for the final exam. It has about 160 multiple choice questions in the form of a practice test. Feel free to use it as a study guide. The solutions to each problem is provided as well as the equations and formulas that you need to solve it. General Chemistry Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&list=PL0o_zxa4K1BV-uX6wX...
This chemistry video tutorial shows you how to determine the empirical formula from percent composition by mass in grams. This video also shows you how to determine the molecular formula from the empirical formula using the combustion analysis technique of a compound. This video contains plenty of examples and practice problems that can help you on your next upcoming worksheet assignment / quiz. Here is a list of topics: 1. Empirical Formula - Lowest Whole Number Ratio 2. Finding the empirical formula from mass in grams 3. Determining the empirical formula using percent composition by mass 4. Calculating Molecular Formula From Empirical Formula Using Molar Mass 5. Combustion Analysis - Compound with 2 elements - Carbon & Hydrogen 6. Empirical Formula From Combustion Analysis - 3 E...
(C) Stephen Easley Walsh. All rights resevered. https://www.MathsGrinds.ie/
For Complete Video Series visit http://www.studyyaar.com/index.php/module/79-interpolation-and-numerical-integration More Learning Resources and Full videos are only available at www.studyyaar.com This video clip is part of module available at http://www.studyyaar.com/index.php/learning-program/8-applied-mathematicsii
for more videos, subscribe via...https://www.youtube.com/channel/UCTYFmDExnT3CXL3Kt3rzUyA In this full lecture, we get to explore everything there is regarding the quadratic formula and roots of a quadratic equation from the discriminant of a quadratic equation, finding the range of values of x in a quadratic equation, finding the minimum and maximum values of a quadratic equation, finding the roots of a quadratic equation, and dealing with quadratic equations when given the roots. There are also worked examples on the roots of quadratic equations as well as worked examples exploring various concepts of quadratic equations. #1 under the nature of the roots of a quadratic equation, we define the form of a quadratic equation and go on to show the formula used to find the solution of a qua...
Brahmagupta's formula gives the area of a cyclic quadrilateral in terms of its four (outside) `lengths', and the CQQ theorem was a logically correct reformulation of that result, using quadrances instead of `distances'. But what about a general quadrilateral? This is a redo of last week's video, where we discuss a lovely formula for the quadrea (16 times the square of the area) of a general planar quadrilateral, in terms of its six quadrances. Thanks to various investigations by viewers, in particular relike868p, pieinth3sky, wgregor31, MisterLi and Martin Josefsson, I can now present a more accurate story of the history of this theorem. It appeared as a Problem in a 1960 American Mathematical Monthly issue, showing that at certain points this result flew under the radar. It is a lovely ...
Welcome to the world’s first television program entirely about happiness! Whatever we call it, joy, contentment, satisfaction, peace of mind, bliss, subjective well-being or the goal of positive psychology, we all know that HAPPINESS RULES! Our collection of over 130 episodes is available for free to high school and college TV stations, community access TV stations, Internet videocasters, and individuals worldwide. Anyone can download our broadcast-quality MPEG versions for free from www.thehappinessshow.com/distribution.htm. Visit our site for more information about the show, and for pages and pages of science-based happiness information and resources. To learn other ways of becoming happier visit http://thehappinessshow.com/OtherWaysOfBecomingHappier.htm. To browse our episo...