Question

Why one mole of Oxygen gas and one mole of oxygen atoms have different
masses?

Answer 1

Answer:

Oxygen Gas means O2

Molecular Weight - 32Gram/permole

Oxygen Atom

Molecular Weight -16gram/permole

In atmosphere Oxygen as O2

n = W/M

n = 1

W = M

n = N /Na

N = Na

Hence Number of entities is same But Molecular Weight is Different

Answer 2

Explanation:

1 mole of oxygen gas contains 6.0221 × 10^23 particles of O2.

Whereas,

1 mole of oxygen atom contains 6.0221 × 10 ^23 particles of 0.

Because mass of 0 (oxygen atom) = 16 u. And mass of 02 (oxygen molecule ) = 16 × 2 = 32 u.

Therefore, 1 mole of oxygen molecule has greater mass than 1 mole of oxygen atom.

Therefore, 1 mole of oxygen gas has different mass as compared to 1 mole of oxygen atom.

Hope this helps you understand my friend ❤️ ❤️ ❤️ ❤️ ❤️ ❤️