Calculating the Unknown Mass of an Isotope of Neon from its Average Mass

Are you curious about isotope calculations and how to find the mass of an isotope using the average atomic mass? In this comprehensive high school chemistry tutorial, I break down the essential steps to help you master nuclear chemistry concepts quickly and accurately. Whether you’re an IB, AP, SCH3U, or IGSCE Chemistry student, this video provides clear explanations and step-by-step problem-solving techniques. Specifically, we are answering the following question: "Neon has three isotopes: Neon-20 (90.4800%, 19.9924 amu), Neon-21 (0.2700%), and Neon-22 (9.2500%, 21.9914 amu). Determine the mass of Neon-21 using the above information".

We’ll explore how average atomic mass is determined from the natural abundances of different isotopes, and then reverse-engineer that information to calculate individual isotope masses. You’ll learn to set up equations, apply mathematical formulas, and use scientific notation to handle isotope masses effectively. I also share plenty of exam tips and practice problems to ensure you’re fully prepared for upcoming tests and quizzes.

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