Question

11. Calculate the mass of 1.505 x 10 molecules of oxygen gas. (Atomic mass of O = 16 u)​

Answer 1

Explanation:

• Atoms & Molecules, We know that 1 mole or 6.023x10²³molecule of oxygen weights(2 × 16)gm = 32gm. So, 1.505x10²³ molecules of O2 will weight = 1.505x10²³x32/6.023x10²³gm. which is 48.16/6.023 or estimately 7.996 gm.