Change in supply versus change in quantity supplied. View more lessons or practice this subject at http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/basic-economics-concepts-macro/supply/v/change-in-supply-versus-change-in-quantity-supplied?utm_source=youtube&utm_medium=desc&utm_campaign=apmacroeconomics AP Macroeconomics on Khan Academy: Welcome to Economics! In this lesson we'll define Economic and introduce some of the fundamental tools and perspectives economists use to understand the world around us! Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc ... https://www.youtube.com/watch?v=NrlF8mMHfLE Note: All Khan Academy content is available for free at (www.khanacademy.org)

Atoms come in a variety of types, called elements, each with a unique set of physical and chemical properties. An element is defined by the number of protons in its atoms, known as its atomic number. The periodic table organizes the elements by atomic number and provides other key information about them such as their names and chemical symbols. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate Volunteer here: https://www.khanacademy.org/contribute Credits: “Galaxy Cluster Abell 2218” by NASA, licensed under a Creative Commons Attribution License (CC BY 2.0): https://www.flickr.com/photos/144614754@N02/45981024214/ https://creativecommons.org/licenses/by/2.0/ “Liquid oxygen in a beaker (cropped and retouched)” by Nika Glover [Public domain], accessed via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Liquid_oxygen_in_a_beaker_(cropped_and_retouched).jpg “Oxygen Tanks” by Todd Van Hoosear, licensed under a Creative Commons Attribution License (CC BY-SA 2.0): https://www.flickr.com/photos/92787319@N00/7557054698 https://creativecommons.org/licenses/by-sa/2.0/ “Graphite-and-diamond-with-scale” by Robert M. Lavinsky, licensed under a Creative Commons Attribution License (CC BY-SA 3.0): https://commons.wikimedia.org/wiki/File:Graphite-and-diamond-with-scale.jpg https://creativecommons.org/licenses/by-sa/3.0/deed.en “Gold nugget (placer gold) 1 (17001285916)” by James St. John, licensed under a Creative Commons Attribution License (CC BY 2.0): https://commons.wikimedia.org/wiki/File:Gold_nugget_(placer_gold)_1_(17001285916).jpg https://creativecommons.org/licenses/by/2.0/deed.en “Gold necklace with coin pendants MET DP107044” by the Metropolitan Museum of Art [Public domain], accessed via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Gold_necklace_with_coin_pendants_MET_DP107044.jpg “Bismuth crystal macro” by Dschwen, licensed under a Creative Commons Attribution License (CC BY-SA 3.0): https://commons.wikimedia.org/wiki/File:Bismuth_crystal_macro.jpg https://creativecommons.org/licenses/by-sa/3.0/deed.en “Xenon-glow” by Jurii, licensed under a Creative Commons Attribution License (CC BY 3.0): https://commons.wikimedia.org/wiki/File:Xenon-glow.jpg https://creativecommons.org/licenses/by/3.0/deed.en “Osmium crystals (cropped)” by Alchemist-hp, licensed under a Free Art License (FAL 1.3): https://commons.wikimedia.org/wiki/File:Osmium_crystals_(cropped).jpg http://artlibre.org/licence/lal/en/ “Congrats bqt” by Pioneer Balloon Company [Public domain], accessed via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Congrats_bqt.jpg “Iron electrolytic and 1cm3 cube” by Alchemist-hp, licensed under a Creative Commons Attribution License (CC BY-NC-ND 3.0): https://commons.wikimedia.org/wiki/File:Iron_electrolytic_and_1cm3_cube.jpg https://creativecommons.org/licenses/by-nc-nd/3.0/ ... https://www.youtube.com/watch?v=OQi8FwPSu5o Note: All Khan Academy content is available for free at (www.khanacademy.org)

10% Rule of assuming "independence" between trials. View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/random-variables-ap/binomial-random-variable/v/10-percent-rule-independence?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc ... https://www.youtube.com/watch?v=elcLysy7exM Note: All Khan Academy content is available for free at (www.khanacademy.org)

The standard molar entropy of a substance is the absolute entropy of 1 mole of the substance in the standard state. For any chemical reaction, the standard entropy change is the sum of the standard molar entropies of the products minus the sum of the standard molar entropies of the reactants. View more lessons or practice this subject at https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:applications-of-thermodynamics/x2eef969c74e0d802:entropy/v/absolute-entropy-and-entropy-change Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc ... https://www.youtube.com/watch?v=ObridY7EHyk Note: All Khan Academy content is available for free at (www.khanacademy.org)