Question

What is mass of :-

(a) 0.2 mole of oxygen atoms ?
(b) 0.5 mole of water molecules?

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Answer 1

ANSWER

A) That is it weighs 16 g. ∴ Mass of 0.2 mole of O2 atoms = 16*0.2 = 3.2 u.

B) 0.2 mole of oxygen atoms = 16 × 0.2 = 3.2 g (b) 1 mole of water molecules = 18 g ∴ 0.5 mole of water molecules = 18 × 0.5 = 9 g 10.

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Answer 2

Answer:

A) That is it weighs 16 g. ∴ Mass of 0.2 mole of O2 atoms = 16*0.2 = 3.2 u.

B) 0.2 mole of oxygen atoms = 16 × 0.2 = 3.2 g (b) 1 mole of water molecules = 18 g ∴ 0.5 mole of water molecules = 18 × 0.5 = 9 g 10.

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Explanation: