Mathematics · Mole Concept
How many moles of Helium (He) atoms are present in a sample weighing 20 u?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15 mol
- 23.011 × 10-24 mol
- 38.303 × 10-24 mol✓
- 420 mol
Correct answer
8.303 × 10-24 mol
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