How many oxygen atoms are in 19 molecules of dinitrogen tetroxide?

Question

How many oxygen atoms are in 19 molecules of dinitrogen tetroxide? N₂O₄

Answer 1

Hi Allison,

Each mol of N₂O₄ contains 4 mols of oxygen and 2 mols of nitrogen, right?

By the same token, each molecule of N₂O₄ contains 4 oxygen atoms and 2 nitrogen atoms

So, 19 N₂O₄ molecules will contain 19 x 4 = 76 oxygen atoms