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5 Cards in this Set
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Empirical Formula |
The simplest whole number ratio of atoms of each element in a compound |
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To find the Empirical Formula: (4 steps) |
1. find the mol ratio by dividing the composition data for each element by the Ar of the element 2. Divide each value by the smallest 3. either round all the values or multiply all the values by a suitable factor to get whole numbers 4. write out the empirical formula |
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Molecular Formula: |
The actual number of atoms of each element in one molecule of a compound |
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Calculating the molecular formula: |
Mf = nEf n = a positive integer |
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To find the number of units (n) of the Ef in the Mf: |
Mr of Mf ------------- = n Mr of Ef |
