Question

why do the potato chips manufactures fill the packet of potato chips
with nitrogen gas

Answer 1

They are filled with nitrogen so that they can't be stale or destroyed due to oxygen.

Answer 2

Answer:

To prevent rancidity

Explanation:

Potato chips come in contact with oxygen and becomes Rancid. Theses rancid chips are unhealthy for human intake. Nitrogen acts as an Antioxidant to prevent the phenomenon of rancidity. That is why the potato chips manufactures fill the packet of potato chips  with nitrogen gas.