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Moles of Compounds. A properly written compound shows the ratio of atoms in the compound. For example, sodium carbonate (Na 2 CO 3 ) shows that for every 1 compound there are 2 atoms of Na, 1 atom of C, and 3 atoms of O.
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A properly written compound shows the ratio of atoms in the compound. For example, sodium carbonate (Na2CO3) shows that for every 1 compound there are 2 atoms of Na, 1 atom of C, and 3 atoms of O.
This also works with the mole. For 1 mole of the compound, there are 2 moles of Na, 1 mole of C, and 3 moles of O. This information allows us to calculate the molar mass of the entire compound, often called the formula mass.
Once it is known that 1 mol of Na2CO3 = 105.9883 g, conversion factors can be made of this information: These conversion factors can then be used in other calculations.
What is the molar mass for potassium oxide (K2O)? K2O = 78.1966 g + 15.9994 g = 94.1960 g
