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

The total number of atoms in 44.8 dm³ of ammonia gas (NH₃) at STP is

A. 6.022 × 10²³
B. 2.4088 × 10²⁴
C. 4.8176 × 10²⁴
✓
D. 1.2044 × 10²⁴

📝 Explanation

44.8 dm³ = 2 moles NH₃. Each molecule has 4 atoms. Total atoms = 8 moles of atoms = 4.8176 × 10²⁴ atoms.

📖 Additional Information

  • 6.022 × 10²³
  • 2.4088 × 10²⁴
  • 4.8176 × 10²⁴
  • 1.2044 × 10²⁴

44.8 dm³ = 2 moles NH₃. Each molecule has 4 atoms. Total atoms = 8 moles of atoms = 4.8176 × 10²⁴ atoms.

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