MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryMole _ Equivalent ConceptPrevious Year Questions
The maximum number of molecules are present in (BCECE 2008)
A.15 L of H₂ gas at STP (b) 5 L of N₂ gas at STP✓ Correct
C.0.5 g of H₂ gas
D.10 g of O₂ gas
Explanation
a) At standard temperature-pressure conditions (STP), 1 mole or Avogadro number of molecules occupies 22.4 L The volume of gas Number of molecules 22.4 L 23 6.022 10 A N x 15 L X Solve for x, we get 23 23 6.022 10 15 4.032589286 10 22.4 x x x x b) At standard temperature-pressure conditions (STP), 1 mole or Avogadro number of molecules occupies 22.4 L The volume of gas Number of molecules 22.4 L 23 6.022 10 A N x 5 L X Solve for x, we get 23 23 6.022 10 5 1.344
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