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In this video, we're going to go over how to calculate the number of atoms in a solution.
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For our examples, we're going to use the number of atoms in 1 .10 grams of hydrogen and 14 .7 grams of chromium.
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Hydrogen has an atomic mass of 1 .008 grams.
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Of course, this is the mass in grams of 1 mole of hydrogen, and chromium has an atomic mass of 51 .996.
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Again, this is the same.
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This is the mass in grams of one mole of chromium.
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First, we need to calculate the mass in a single atom of each of these elements.
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To do this, we take the atomic mass, which is the mass in grams of one mole, and divide it by avagadro's number, which is the number of atoms in one mole.
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We plug in these numbers.
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We have the atomic mass of hydrogen, 1 .008, divided by 6 .02 times 10 to the 23rd, which is the number, of atoms in one mole, and we'll get that a mass of a single atom of hydrogen is 1 .67 times 10 to negative 24 grams...
