Uploaded May 2014 | Updated September 2026, 2 weeks ago

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How do you calculate the mass of a single atom or molecule? In this video, we'll answer the following questions: "What is the mass in grams of a single atom of oxygen?" and "What is the mass in grams of a single molecule of water H2O?" In order to solve these problems, we will make conversion factors that include molar mass and Avogadro's number, 602 hexillion, the number of things in one mole.