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What is the mass of (a) 0.2 mole of oxygen atoms? (b) 0.5 mole of water molecules?

  What is the mass of
       (a) 0.2 mole of oxygen atoms?
       (b) 0.5 mole of water molecules?

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5968 Points
9 months ago
Dear Student

(a) Mole of Oxygen atoms = 0.2 mole
Molar mass of oxygen atoms = 16 g
Mass of oxygen atoms = 16 × 0.2 = 3.2 g
(b) Mole of water molecule = 0.5 mole
Molar mass of water molecules = 2 × 1 + 16 = 18 g
Mass of H2O = 18 × 0.5 = 9 g

Thanks

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