1 Select the Triggers tab, and then select New. 2  Set your time and frequency, and then select OK.  Open Windows Defender by clicking the Start button. In the search box, type Defender and then, in the list of results, click Windows Defender.
A. An empirical formula represent a molecule. B. an empirical formula gives the smallest whole number ratio of each type of atom in a MOLECULE. C. The molecular formula can be the same as the empirical formula in some situations. D. An empirical formula must be multiplied by an integer to obtain the molecular formula.
1 The empirical formula is the simplest whole-number ratio of atoms in the compound. 2  For iso-octane, the empirical formula is C 4 H 9. 3  Notice that the molecular formula is twice that of the empirical formula.