Lesson 9 talks more about moles. A mole is also Avogadro's number. The mass of 1 mole is equal to the molar mass. Then on the periodic table the atomic mass is equal to 1 mole of atoms of the element in grams. You use molar mass to convert between moles of atoms and grams of atoms.
Practice Problems
1. The average mass of atoms of an element is listed on the periodic table.
Lesson 10
Lesson ten was more about converting grams, moles, and molar mass. This is where we really put the knowledge we gained in lesson 9 to practice. The most important thing to remember here is to label your numbers with units and make sure your units cancel out.
Practice Problem
5. A) 10 g calcium, Ca
B) 5 g sodium fluoride, NaF
C) 2 g iron oxide, FeO
Lesson eleven continues to talk about converting mass and molar mass and moles. There is practice problem pictured below.
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