Number of gm of oxygen in 32.2 g Na₂ SO₄.10H₂O is [Haryana PMT 2000]

Question: Number of gm of oxygen in 32.2 g Na₂ SO₄.10H₂O is [Haryana PMT 2000]

(a) 20.8

(b) 22.4

(c) 2.24

(d) 2.08

Correct Answer: (b) 22.4

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