Calculations using Avogadro's number (part 1) | Chemistry | Khan Academy
112Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now!
https://www.khanacademy.org/science/h...
Atomic mass units (a.m.u.) are much smaller than grams and are used to measure atomic-scale masses. Avogadro's number (6.022 x 10²³) represents the quantity of particles in one mole, linking atomic masses to measurable amounts in grams. Molar mass, expressed in grams per mole, bridges these concepts, enabling the conversion between the mass of a substance and the amount in moles.
Sections:
00:00 - Introduction
00:25 - What is an Atomic mass unit (amu or u)
04:20 - Avogadro's number and the mole
08:12 - Molar mass
10:28 - Calculating the number of atoms in a sample
11:29 - Calculating the molar mass of CO2
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://donate.khanacademy.org/give/4...
Volunteer here: https://www.khanacademy.org/contribut...