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

Oxygen gas weighing 1.6 g contains molecules equal to

A. 3.011 × 10²²
✓
B. 6.022 × 10²²
C. 3.011 × 10²³
D. 6.022 × 10²³

📝 Explanation

1.6 g oxygen equals 0.05 mole. Therefore, the number of molecules equals 0.05 × Avogadro's number.

📖 Additional Information

  • 3.011 × 10²²
  • 6.022 × 10²²
  • 3.011 × 10²³
  • 6.022 × 10²³

1.6 g oxygen equals 0.05 mole. Therefore, the number of molecules equals 0.05 × Avogadro's number.

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