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MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryMole _ Equivalent ConceptAtomic and Molecular Masses

What’s  the  number  of  particles  in  10  moles  of hydrochloric acid? a) 6.022 × 1024 particles b) 6.022 × 1023 particles c) 6.22 × 1023 particles d) 3.22 × 1022 particles

Answer
A
Explanation

One  mole  of  any  substance  contains  Avogadro’s number of particles. Its value is 6.022×1023 atoms. But here the question is about 10 moles of a substance. So multiply the Avogadro’s number by 10. Therefore 6.022 × 1023 × 10 = 6.022 × 1024.

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