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Views: 2276373 Khan Academy

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This chemistry video tutorial explains how to find the empirical formula given the mass in grams or from the percent composition of each element in a compound. If you're given the mass percent, you can simply treat it as if you were given the mass in grams. This video explains how to find the molecular formula given the molar mass of the compound. You can do this once you have the empirical formula. This video explains all of it. It has plenty of practice problems and examples for you to master this lesson. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor

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Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation Calculating the density of a molecule can be accomplished using information you already have access to. Calculate the density of a molecule with help from a teacher with over 20 years of experience in this free video clip. Expert: Janice Creneti Bio: Janice Creneti has a bachelor's degree in secondary science education and biology from Boston University. Filmmaker: Christopher Rokosz Series Description: Chemistry and physics calculations need to be completed in a very specific way, as oftentimes an answer will tell you quite a bit about a particular element or problem that you're working with. Get tips on how to complete various types of chemistry and physics calculations with help from a teacher with over 20 years of experience in this free video series.
Views: 6170 eHowEducation

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Find my revision workbooks here: https://www.freesciencelessons.co.uk/workbooks/shop/ In this video, we look at what is meant by the word "mole" and how to calculate moles of an element. This can be seen as a tricky subject but I'll explain what you need to know and make it easier for you to get.
Views: 255232 Freesciencelessons

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This chemistry video tutorial explains the conversion process of atoms to grams which is a typical step in common dimensional analysis stoichiometry problems. This video contains a lot of examples and practice problems. In order to convert atoms to grams, you need to use avogadro's number to convert atoms to moles. Next, you need to use the molar mass to convert moles into grams. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor

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This chemistry video tutorial explains how to solve a solution stoichiometry practice problem using an equation that contains Normality and Volume. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/

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This chemistry video tutorial explains how to find the empirical formula and molecular formula using combustion analysis. It explains how to calculate the number of moles of each element given the mass in grams of CO2 and H2O. Examples include compounds containing Carbon, Hydrogen, and Oxygen. This video contains plenty of practice problems New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor

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This chemistry video tutorial explains how to calculate the molar mass from osmotic pressure. Given the osmotic pressure and the van't hoff factor, you need to calculate the molarity of the solution which can help you to determine the number of moles of solute in the solution if you know the volume of the solution. The molar mass is the ration between the mass in grams and number of moles of solute. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/

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How to find the average atomic mass of an element. You need to know the mass of each isotope and the percent (%) abundance of each as well. Multiply each mass by its corresponding percentage, and add these products together.
Views: 353541 chemistNATE

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When we take a measurement or make a calculation, how many digits do we use? There's rules, friend! You must obey the sig figs. Don't worry, learn all about them in this clip, and you'll be the coolest kid on the block. Subscribe: http://bit.ly/ProfDaveSubscribe [email protected] http://patreon.com/ProfessorDaveExplains http://professordaveexplains.com http://facebook.com/ProfessorDaveExpl... http://twitter.com/DaveExplains General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths Biology Tutorials: http://bit.ly/ProfDaveBio American History Tutorials: http://bit.ly/ProfDaveAmericanHistory

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This chemistry video tutorial discusses the law of conservation of mass and provides examples associated with chemical reactions. The conservation of mass in a chemical reaction is one of the fundamental laws in chemistry. The total mass of the reactants must equal the total mass of the products in a chemical reaction. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor

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Views: 3195 Leah4sciMCAT

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This chemistry video tutorial provides an introduction to moles. It explains the concept of moles and how it relates to mass in grams by the molar mass of a compound. it also explains how moles relate to atoms and molecules through avogadro's number. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor

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Determining the mole ratios of a balanced chemical equation for stoichiometry.
Views: 110311 SMARTERTEACHER

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This chemistry video tutorial explains how to solve practice problems associated with boyle's law. it provides an example that illustrates the concept of boyle's law as well as the PV graph that goes with it. As the volume increases, the pressure decreases in an inverse relationship. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/

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This chemistry video tutorial explains the fundamental concepts behind Charles Law. Charles law shows the relationship between volume and temperature. if you graph it, you should get a straight line. This video contains plenty of examples and practice problems with all of the equations and formulas that go with it. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/

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Views: 27221 Don't Memorise

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Views: 2392247 Numberphile

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Views: 2388 Leah4sciMCAT

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This chemistry and physics video tutorial explains how to convert from celsius to fahrenheit to kelvin using a two formulas / equations. This video contains plenty of examples and practice problems. Here is a list of topics: 1. Fahrenheit to Celsius Conversion Formula - F to C 2. Celsius to Kelvin Conversion - C to K 3. The temperature at which Celsius equals Fahrenheit 4. Kelvin to Celsius Conversion - K to C 5. Celsius to Fahrenheit Unit Conversion Equation - C to F 6. Absolute Zero Kelvin - Coldest Temperature

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Views: 223701 Avanti Gurukul

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What is a mole and why do we use it; what is molar mass; step by step tutorial explaining how to convert mole-mass and mass-mole and how to use the periodic table for determination of molar mass; mole-particle and particle-mole conversions explained; mass-particle and particle-mass conversions explained using a dimensional analysis approach. CC Academy videos are easy 101 crash course tutorials for step by step Chemistry help on your chemistry homework, problems, and experiments. Check out our best lessons: - Solution Stoichiometry Tutorial: How to use Molarity - Stoichiometry - Quantum Numbers - Rutherford's Gold Foil Experiment, Explained - Covalent Bonding Tutorial: Covalent vs. Ionic bonds - Metallic Bonding and Metallic Properties Explained: Electron Sea Model - Effective Nuclear Charge, Shielding, and Periodic Properties - Electron Configuration Tutorial + How to Derive Configurations from Periodic Table - Orbitals, the Basics: Atomic Orbital Tutorial — probability, shapes, energy - Metric Prefix Conversions Tutorial - Gas Law Practice Problems: Boyle's Law, Charles Law, Gay Lussac's, Combined Gas Law — More on the Mole | Wiki — "The mole is the unit of measurement in the International System of Units (SI) for amount of substance. It is defined as the amount of a chemical substance that contains as many elementary entities, e.g., atoms, molecules, ions, electrons, or photons, as there are atoms in 12 grams of carbon-12 (12C), the isotope of carbon with relative atomic mass 12 by definition. This number is expressed by the Avogadro constant, which has a value of 6.022140857(74)×1023 mol-1. The mole is one of the base units of the SI, and has the unit symbol mol. The mole is widely used in chemistry as a convenient way to express amounts of reactants and products of chemical reactions. For example, the chemical equation 2 H2 + O2 → 2 H2O implies that 2 mol of dihydrogen (H2) and 1 mol of dioxygen (O2) react to form 2 mol of water (H2O). The mole may also be used to express the number of atoms, ions, or other elementary entities in a given sample of any substance. The concentration of a solution is commonly expressed by its molarity, defined as the number of moles of the dissolved substance per litre of solution. While according to the official SI definition, the words "mol(es) of" should be followed by a singular word denoting a substance ("water", "oxygen"), they are commonly used by chemists with a plural word referring to elementary entities, such as atoms or electrons. In this usage,[1] mole is a number equal to 0.6022 trillion trillions, i.e. Avogadro's number. The expression "mol(es) of electrons", widely used in electrochemistry, is particularly incompatible with the SI definition since there is no 'electron substance' whose amount could be quantified. The number of molecules per mole is known as Avogadro's constant, and is defined such that the mass of one mole of a substance, expressed in grams, is equal to the mean relative molecular mass of the substance. For example, the mean relative molecular mass of natural water is about 18.015, therefore, one mole of water has a mass of about 18.015 grams. The term gram-molecule was formerly used for essentially the same concept.[2] The term gram-atom has been used for a related but distinct concept, namely a quantity of a substance that contains Avogadro's number of atoms, whether isolated or combined in molecules. Thus, for example, 1 mole of MgB2 is 1 gram-molecule of MgB2 but 3 gram-atoms of MgB2.[3][4] In honor of the unit, some chemists celebrate October 23, which is a reference to the 1023 scale of the Avogadro constant, as "Mole Day". Some also do the same for February 6 and June 2." Wikipedia contributors. "Mole (unit)." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 27 Jun. 2016. Web. 2 Jul. 2016.

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Views: 3215 Leah4sciMCAT

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This chemistry video tutorial provides a basic introduction into unit cell and crystal lattice structures. It highlights the key differences between the simple cubic unit cell, the body centered cubic structure and the face centered cubic structure in table format. It provides the number of atoms per unit cell / coordination number, the atomic packing factor / fractional volume efficiency, and the formulas for the edge length calculation of each unit cell which can be useful to calculate the density of the crystal structure given the atomic radius and vice versa. This video is packed with information. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/

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Views: 16895 Don't Memorise

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Views: 86256 Don't Memorise

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*** PLEASE WATCH WITH ANNOTATIONS ON! SOME INACCURACIES IN GRAPHICS ARE NOTED AND CORRECTED IN ANNOTATIONS. THANKS! *** Molecules come in infinite varieties, so in order to help the complicated chemical world make a little more sense, we classify and categorize them. One of the most important of those classifications is whether a molecule is polar or non-polar, which describes a kind of symmetry - not just of the molecule, but of the charge. In this edition of Crash Course Chemistry, Hank comes out for Team Polar, and describes why these molecules are so interesting to him. You'll learn that molecules need to have both charge asymmetry and geometric asymmetry to be polar, and that charge asymmetry is caused by a difference in electronegativities. You'll also learn how to notate a dipole moment (or charge separation) of a molecule, the physical mechanism behind like dissolves like, and why water is so dang good at fostering life on Earth. -- Table of Contents Charge Assymetry & Geometric Asymmetry 01:33 Difference in Electronegatives 01:49 Hank is Team Polar 00:33 Dipole Moment 03:49 Charge Separation of a Molecule 04:12 Like Dissolves Like 04:41 Water is Awesome 05:10 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2482036 CrashCourse

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This chemistry video tutorial discusses the law of definite proportions. It's a fundamental chemical law that states that the masses of each element in a given compound have constant composition. This tutorial contains plenty of examples and practice problems on how to find the number of grams of element in a certain compound. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor

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Views: 56432 Don't Memorise

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To manipulate chemical reactions on a large scale, scientists use stoichiometry to quantify those reactions. The use of stoichiometry ensures there are the right amount of reactants and products. Without it, reactions can be incomplete, with expensive materials wasted and harmful byproducts created. Using stoichiometry, scientists are creating chemicals that take the place of petroleum in fabricating sustainable materials. At a different lab, scientists are mimicking the process of photosynthesis to convert the sun’s energy into storable chemical energy. Part of Chemistry: Challenges and Solutions Series. Producer/Distributor: ANNENBERG Production Year: 2014 Grade Level: 10-12 Registered DCMP members can access this title for free at the following URL: http://www.dcmp.org/media/8692

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Views: 80 Ekeeda

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Views: 6036 Chem Academy

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Basic Plotting of Ascii NMR Data in Kaleidagraph. Opening ascii text NMR data with only the NMR intensities and a header file that gives the chemical shift axis (X-Axis). Creating a x-axis in Kaleidagraph using a series macro and plotting the NMR spectrum.
Views: 1967 Pchem Lab

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Views: 235 Fun Man FUNG

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Views: 65741 Don't Memorise

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رابط الأداة المستخدمة في الشرح : http://on.mohtrf.com/1fVeBGA رابط تحميل موزيلا فايرفوكس : http://on.mohtrf.com/1fVeXwJ ____________________________________________________ تويتر : https://www.twitter.com/OsOsMe فيسبوك : https://www.facebook.com/Computer.Proffessional الموقع : https://www.mohtrf.com
Views: 1338 Osama Raafat

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Views: 700 IIT Guwahati

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This physics video tutorial explains how to calculate the molar heat capacity of a monoatomic gas and a diatomic gas. it gives a simple formula to achieve this. In addition, it discusses the equipartition of energy principle as it relates to the average translational kinetic energy for each degree of freedom for a molecule. This video contains plenty of examples and practice problems. New Physics Video Playlist: https://www.youtube.com/playlist?list=PL0o_zxa4K1BU6wPPLDsoTj1_wEf0LSNeR Access to Premium Videos: https://www.patreon.com/MathScienceTutor https://www.facebook.com/MathScienceTutoring/

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Views: 16574 Chem Academy

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Lecture Series on Basic Thermodynamics by Prof.S.K. Som, Department of Mechanical Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.ac.in
Views: 1034991 nptelhrd

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Experiment 3 in CHEM 1310 is titled "Two Challenges Using Stoichiometry and the Mole." In this experiment, we'll apply stoichiometry to design and execute a chemical synthesis, and use it to figure out which of two possible products is formed in a redox reaction.
Views: 1678 Michael Evans

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