- 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).
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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.
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 chemistry, the empirical formula of a chemical compound is the simplest positive integer ratio of atoms present in a compound. A simple example of this concept is that the empirical formula of sulfur monoxide, or SO, would simply be SO, as is the empirical formula of disulfur dioxide, S_{2}O_{2}. This means that sulfur monoxide and disulfur dioxide, both compounds of Sulfur and Oxygen will have the same empirical formula.
An empirical formula makes no mention of the arrangement or number of atoms. It is standard for many ionic compounds, like CaCl_{2}, and for macromolecules, such as SiO_{2}.
The molecular formula, on the other hand, shows the number of each type of atom in a molecule. Also the structural formula shows the arrangement of the molecule. It is possible for different types of compounds to have equal empirical formulas.
Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! 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.
Explains the 'general form' of quadratic equations, and how that is used to understand the quadratic formula
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...
CLASS 10 | GENERAL FORMULA OF ALKANE, ALKENE, ALKYNE | TX ACADEMY
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
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.
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.
Watch all my videos at www.freesciencelessons.co.uk This video is for the new GCSE specifications (levels 1-9) for all exam boards. In this video, we look at how to interpret a chemical formula. This is very important for the rest of the GCSE Chemistry course.
Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! Many people know how to use the quadratic formula to find solutions to quadratic equations... but where does it come from?? In this video, I show how to derive the quadratic formula! For more free videos, visit http://PatrickJMT.com
We'll learn how to calculate molecular formula for a compound when you are given its empirical formula and its molar mass. In order to do this, you need to figure out what to multiply the empirical formula by to get the molecular formula and the correct molar mass. The multiple can be determined by dividing the molar mass of the compound by the molar mass of the empirical formula.
Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! 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.
रासायनिक सूत्र को याद करने की ट्रिक General Science Chemistry Objective (Multiple Choice) General Knowledge Questions, science quiz Chemistry important questions, General Knowledge Questions about Chemistry, General Science - Chemistry Click to Purchase Maths Full Video Pen-drive Course In Hindi: https://goo.gl/AJVPxr Current affairs Quiz ............................................................................................................ Current affairs January 2018 Quiz : https://goo.gl/uZGJ5g Current affairs December 2017 Quiz : https://goo.gl/bKtVwk Current affairs November 2017Quiz : https://goo.gl/45AthA Current affairs October 2017 Quiz : https://goo.gl/GffymL Current affairs September 2017 Quiz : https://goo.gl/V6Pfx9 Current aff...
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.
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.
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
An example of solving a trigonometric equation.
This video provides an example of how to write the general equation of a circle in standard form to find the center and radius and then graph the circle. Site: http://mathispower4u.com Blog: http://mathispower4u.wordpress.com
https://getchemistryhelp.com/learn-chemistry-fast/ This lesson shows how to interpret the elemental symbols, subscripts, and parentheses in a chemical formula.
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.
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.
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.
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
Lecturer: Edmund Bertschinger View the complete course at: http://ocw.mit.edu/8-224S03 *NOTE: Sessions 6, 7 have no video. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Related Examples: https://www.youtube.com/watch?v=2VllRBxlS9k&index=19&list=PLJ-ma5dJyAqqCjBuMs94arUyFu4UlH_Uu https://www.youtube.com/watch?v=CJZI1VN35Hw&index=2&list=PLJ-ma5dJyAqqCjBuMs94arUyFu4UlH_Uu Recursive Formula, General Formula and Basic Concepts about Sequences with Test Practice Questions.
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.
http://www.MathsGrinds.ie (C) Copyright Stephen Easley-Walsh. All rights reserved.
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
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 ...
(C) Stephen Easley Walsh. All rights resevered. https://www.MathsGrinds.ie/
(C) Stephen Easley Walsh. All rights resevered. https://www.MathsGrinds.ie/
Esta aplicacion fue hecha para un proyecto que me dejaron Tecnologico de Estudios Superiores de Chimalhuacan Elaboro: Romero Guarneros Jorge Fernando Materia: Tópicos avanzados de programación Grupo: 4ISC11
First Order Linear Differential Equation, the idea & strategy w/ example. Plus, how to find the integrating factor. Fake Product Rule (Math for fun): https://www.youtube.com/watch?v=ZH5rfWcR7l4 Diff Eq Playlist: https://www.youtube.com/playlist?list=PLj7p5OoL6vGxek9Wi7spPR-XmWzPjqgWd blackpenredpen follow me: https://twitter.com/blackpenredpen, tags: differential equations tutorials videos, blackpenredpen differential equations, blackpenredpen, Nagle differential equations homework solutions, calculus homework solutions, first order linear differential equation, linear differential equation, solve dy/dx+P(x)y=Q(x), what is integrating factor, first order differential equations integrating factor,
Derivation by Rawiri Mahue. Software and style inspired by Khan Academy.
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...