Why is rusted iron an example of an oxidation-reduction reaction

Identifying limitations of kinetic-molecular theorya chemist is studying the properties of a gas under various conditions. he observes that when the gas is at room temperature and low pressure, it behaves as an ideal gas. when the gas is cooled to 10 kelvin and is placed under high pressure, however, it deviates significantly from an ideal .

Two things that biomedical has invented or innovated

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)