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Chemistry NMDCAT MCQs Moles and Avogadro's Numbers
nmdcat.online July 2, 2026

A compound has the molecular formula X₄O₆. If 0.5 moles of this compound contain 3 moles of oxygen atoms, the value of the subscript for oxygen is

A. 2
B. 3
C. 6
✓
D. 4

📝 Explanation

0.5 × 6 = 3 moles of oxygen atoms. Therefore, the oxygen subscript is 6.

📖 Additional Information

  • 2
  • 3
  • 6
  • 4

0.5 × 6 = 3 moles of oxygen atoms. Therefore, the oxygen subscript is 6.

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