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Views: 2250224 Khan Academy
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
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
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.
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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/
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/
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
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
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/
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: 201927 Freesciencelessons
Views: 22407 Don't Memorise
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/
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: 348730 chemistNATE
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Views: 2036 Leah4sciMCAT
Views: 2747 Leah4sciMCAT
Determining the mole ratios of a balanced chemical equation for stoichiometry.
Views: 104818 SMARTERTEACHER
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/
Views: 5372 Chem Academy
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, 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. 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. 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.
Views: 205809 Avanti Gurukul
*** 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: 2405596 CrashCourse
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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Views: 1319 Victoria McClelland
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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: 2318226 Khan Academy
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Views: 494 IIT Guwahati
Views: 219 Fun Man FUNG
Solutions are uniform mixtures of molecules in which any of the phases of matter can be dissolved in another phase. Whether solids, liquids, or gases, solution chemistry is important because most chemical reactions, whether in the laboratory or in nature, take place in solutions. In particular, solutions with water as the solvent are the core of all biology. Extending the particle model of matter to solutions enables chemists to predict what will happen to a deep-sea diver who breathes different mixtures of gases or to the life forms in the ocean as carbon dioxide levels rise in the atmosphere. Part of Chemistry: Challenges and Solutions Series. Producer/Distributor: ANNENBERG Production Year: 2014 Grade Level: 9-12 Registered DCMP members can access this title for free at the following URL: http://www.dcmp.org/media/8694
Building a suitable bioinformatic platform for small molecule R&D with high throughput screening (HTS) is challenging for a small biotech startup with limited experiences and resource. At Flatley Discovery Lab, we started with desktop-based data process and library management applications in our initial chemical library build-up and HTS data processing. We have grown into an Oracle-based system, and implemented additional commercial packages on the platform. The system is designed and tailored to meet exactly the need of our biologists and chemists. With desktop-based component remains to be the front end for HTS raw data processing and data QC, advanced data analysis and visualization tools are introduced to support our SAR and lead development efforts. In only a few years since its inception, Flatley Discovery Lab has discovered several exciting CFTR modulators in the development pipeline toward a new and efficacious treatment for Cystic Fibrosis.
Views: 474 ChemAxon
This webinar shows how to use the chemical spreadsheets and molecular editor inside MolSoft's ICM-Chemist software http://www.molsoft.com/icm-chemist.html Topics include: -How to Import and Export Chemical Spreadsheets - How to Sketch Chemical Data using the - Molecular Editor - Chemical Spreadsheet Display Options - Calculating Chemical Properties - Spreadsheet Manipulation - add, delete, hide, select, rename chemical data - Working with different chemical formats - SDF – - SMILES – InChiKeys – 3D - Working with a Chemical Spreadsheet Template
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: 1830 Pchem Lab
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Views: 1331 Osama Raafat
This chemistry video tutorial explains the concept of the law of multiple proportions. It's another fundamental chemical law that states the ratio of the masses of the 2nd element for different compounds can be reduced to whole numbers. This video contains plenty of examples and practice problems that illustrate the law of multiple proportions. 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
This chemistry video tutorial focuses on Gay Lussac's Law which explains the relationship between Temperature and Pressure. Its 's one of the four main gas laws that you need to know. This lesson contains plenty of examples and 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 Facebook: https://www.facebook.com/MathScienceTutoring/
Learn how to use the exponent key on the Sharp EL-531X calculator.
Views: 41926 The Solutions Lab
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
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Views: 15044 Chem Academy
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