- published: 12 Dec 2011
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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 mathematics, a geometric series is a series with a constant ratio between successive terms. For example, the series
is geometric, because each successive term can be obtained by multiplying the previous term by 1/2.
Geometric series are one of the simplest examples of infinite series with finite sums, although not all of them have this property. Historically, geometric series played an important role in the early development of calculus, and they continue to be central in the study of convergence of series. Geometric series are used throughout mathematics, and they have important applications in physics, engineering, biology, economics, computer science, queueing theory, and finance.
The terms of a geometric series form a geometric progression, meaning that the ratio of successive terms in the series is constant. This relationship allows for the representation of a geometric series using only two terms, r and a. The term r is the common ratio, and a is the first term of the series. As an example the geometric series given in the introduction,
A general officer is an officer of high rank in the army, and in some nations' air forces or marines.
The term "general" is used in two ways: as the generic title for all grades of general officer and as a specific rank. It originates in the 16th century, as a shortening of captain general, which rank was taken from Middle French capitaine général. The adjective general had been affixed to officer designations since the late medieval period to indicate relative superiority or an extended jurisdiction.
Today, the title of "General" is known in some countries as a four-star rank. However different countries use different systems of stars for senior ranks. It has a NATO code of OF-9 and is the highest rank currently in use in a number of armies.
The various grades of general officer are at the top of the military rank structure. Lower-ranking officers in land-centric military forces are typically known as field officers or field-grade officers, and below them are company-grade officers.
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.
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.
► 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...
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!!!
CLASS 10 | GENERAL FORMULA OF ALKANE, ALKENE, ALKYNE | TX ACADEMY
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
Here's how to write formulas for binary ionic compounds. We'll see how you have to balance the charges of the two ions so they cancel each other out.
This video helps you to see exactly what a condensed structural formula is.
In this video l want to prove some mathematical formula, if you like this video....please do like,comment,share & subscribe my channel.
Arithmetic Sequences: A Formula for the ' n - th ' Term. In this video, I derive the formula to find the 'n-th' term of a sequence by considering an example. I then use the formula to do a few different problems.
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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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.
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 ...
I'm going to prove some mathematical formula related to Secondary School Level. ...................... If you like this channel, please do subscribe. ...................... Keep supporting us! ...................... Thanks for watching.
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Hard to explain this in text -- just watch the video!
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
understanding the basic concept of differentiation general formula
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.
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 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 ...
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
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
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.
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 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...
ilmkidunya.com has brought to you Lecture of Sibghat Ullah on "9th Class Chemistry Chapter 1 Fundamentals of Chemistry . Topic 1.2.4 Chemical Formula". In this video following sub topics have been taught: - Types of Chemical formula For more videos of Sibghat Ullah visit https://www.ilmkidunya.com/study , https://www.instutor.com This lecture is specially recorded for students of 9th class, 9th class from all Punjab Boards and is based on the current curriculum of study for Chemistry book. All these lectures are conducted in Urdu/English medium to facilitate Pakistani students.
Derivation by Rawiri Mahue. Software and style inspired by Khan Academy.
Some formulas of Excel are so useful that almost every excel user should know them, Guruji makes a list of 10 most used Excel formulas for you. Watch the video for a detailed explanation. 10 Most Used Formulas Of MS Excel To watch more videos and download the files visit : http://www.myelesson.org To Buy a Excel Course DVD visit : http://bit.ly/1CgLhku Subscribe to the channel : http://bit.ly/1tpIjXZ Like us on Facebook : http://www.facebook.com/excelmadeasy Follow us on Twitter : https://twitter.com/Excelmadeasy
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This general chemistry study guide video lecture tutorial provides an overview of chemical kinetics. It contains plenty of examples, practice problems, and conceptual questions to help you to master the course. This video is especially helpful to those taking AP chemistry in high school or general chemistry in college. Here is a list of topics: 1. How to calculate the rate of the reaction using the change in concentration and time 2. Determining the order of a reactant and the overall order of the reaction using the method of initial rates. 3. How to determine the rate equation or rate law expression 4. Calculating the rate constant K and the units of K 5. Understanding the difference between the first order, second order, and zero order reaction. 6. Equations and formulas for zer...
Problems based on standard formula of indefinite integration. MATHSkart.in is The First Online Tutorial Video For IIT-JEE Aspirants who wants Complete Chapter wise syllabus of MATHS for MAINS & ADVANCED of IIT-JEE, 'FREE OF COST' on YOU TUBE. BPS Chauhan is Senior MATHS Faculty who belongs to KOTA only having more than 20 years of experience. KOTA style of COACHING now available on www.mathskart.in http://www.mathskart.in https://web.facebook.com/?_rdc=1&_rdr https://www.linkedin.com/in/bhupendra-pal-singh-chauhan-3171604b/ https://twitter.com/BpsKota https://www.instagram.com/?hl=en https://www.quora.com/profile/Bhupendra-Pal-Singh-Chauhan
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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 ...
Please watch: "Railway Group D Recruitment 2018: 62,907 Vacancies: Strategy and Complete Planning" https://www.youtube.com/watch?v=RQWxWK7eFJo --~-- जब आप Competitive Exams के Mathematics के लिए Preparation करते हैं, तो विभिन्न किताबों और शिक्षकों द्वारा सुझाये गए Formulas के लम्बे-चौड़े List से आप डर जाते हैं और Mathematics पढने के आपके उत्साह पर शुरू में ही पानी फिर जाता है. जबकि, सच तो यह है कि Formulas का नाम Mathematics नहीं है. Concept ही सबकुछ है. फिर भी कुछ Formulas और Facts याद रखने पड़ते हैं. इस विडियो में उन थोड़े से Formulas की लिस्ट दी गयी है, जिन्हें याद कर लेने या समझ लेने के बाद और किसी Formulas की जरुरत नहीं पड़ती. और, उस Concept का वर्णन किया गया है, जिसके सहारे किसी भी प्रश्न को बड़ी ही सरलता के साथ, तुरंत बनाया जा सकता है. तो, आइये देखते हैं: Watch the video: Mathematics ...