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

A gas has a density of 1.964 g/dm³ at STP. The molar mass of this gas is approximately

A. 22 g/mol
B. 32 g/mol
C. 44 g/mol
✓
D. 28 g/mol

📝 Explanation

Molar mass = Density × 22.4 = 1.964 × 22.4 ≈ 44 g/mol.

📖 Additional Information

  • 22 g/mol
  • 32 g/mol
  • 44 g/mol
  • 28 g/mol

Molar mass = Density × 22.4 = 1.964 × 22.4 ≈ 44 g/mol.

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