Moles are extremely important to many chemical calculations. Sometimes you need to find moles, and in other cases, moles are necessary to find something else. The molar mass is useful to convert mass to moles or to convert moles to mass. Converting moles to mass is useful in determining the percent composition and percent yield. Converting mass to moles is useful in determining empirical and molecular formulas and in finding the limiting reactant.
The Problems You’ll Work On
In this chapter, you work with molar calculations in the following ways:
Calculating molar mass
Finding percent composition
Writing empirical and molecular formulas
Completing molar calculations
Finding the percent yield
Working with limiting reactants
Note: For access to the periodic table, see the Appendix.
What to Watch Out For
Remember the following when working on molar calculations: ...