Question

How is oxygen heavier than air if air is composed of oxygen?

Answer 1

Answer 3: "Air is a mixture of gases, primarily nitrogen and oxygen. Oxygenis denser than both air and nitrogen, at all temperatures and pressures, but only slightly. Since they don't separate from each other, we generally don't worry which is lighter or heavier.

Answer 2

Hey!

ANS:--


Air is composed of nitrogen (78 %) , oxygen (21%) and other gases (1%) . The oxygen  has mass of 32 g and nitrogen 28 g . So the average value of air's weight is lower than 32. So oxygen is heavier.