Filling up a table about a chemical reaction

I am filling up this table but I'm not sure about what it means in the mass row, amount of substance, molecule quantity.


In mass do I just have to repeat 16 in the second column or do I need to put the mass of a single molecule?


Amount of substance 1 mole of the molecule or 5 moles of each atom?


I'm confused.


[![Table](https://i.stack.imgur.com/DcrEk.png)](https://i.stack.imgur.com/DcrEk.png)


