PLEASE HELP I DON'T UNDERSTAND!!
The following data was collected when a reaction was performed experimentally in the laboratory.


Reaction Data
Reactants Products
Al(NO3)3 NaCl NaNO3 AlCl3
Starting Amount in Reaction 4 moles 9 moles ? ?


Determine the maximum amount of NaNO3 that was produced during the experiment. Explain how you determined this amount.