FeSO₄ · 7H₂O ning 13,9 grammida necha gramm kislorod mavjud?

  1. 8,8
  2. 5,6
  3. 3,2
  4. 6,3

📝 Detailed explanation

FeSO₄ · 7H₂O ning molyar massasi: M = 56 + 32 + 4×16 + 7×18 = 56+32+64+126 = 278 g/mol.
13,9 g da mol soni: n = 13,9/278 = 0,05 mol.
Bir formuladagi kislorod atomlari soni: SO₄ da 4 ta + 7H₂O da 7 ta = 11 ta O atomi.
Kislorod massasi: m(O) = 0,05 × 11 × 16 = 8,8 g.
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Question 21 of 36
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