Answer:12 oxygen atoms are in 4 molecules of HNO3
Explanation: the amounts of atoms of all the component in HNO3, which are 1 atom of Hydrogen, 1 atom of Nitrogen and 3 atoms of Oxygen.
<span>It is false that a thin red border indicates the active cell. As a matter of fact, an active cell is indicated by a thin green border. That means that you have clicked that particular cell, and that it is activated, so that you can use it and write whatever you want there. Usually, even in the real world, green means that something is active, and red that it is inactive.</span>
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Submit command, as it hands in the data to the server
