What’s the number of particles in 10 moles of hydrochloric acid?(a) 6.022 x 10^22 particles(b) 6.022 x 10^23 particles(c) 6.22 x 10^23 particles(d) 3.22 x 10^22 particlesThis question was posed to me during a job interview.The origin of the question is Mole Concept and Molar Masses topic in chapter Chemistry Basic Concepts of Chemistry – Class 11

What’s the number of particles in 10 moles of hydrochloric acid?(a)

1.	What’s the number of particles in 10 moles of hydrochloric acid?(a) 6.022 x 10^22 particles(b) 6.022 x 10^23 particles(c) 6.22 x 10^23 particles(d) 3.22 x 10^22 particlesThis question was posed to me during a job interview.The origin of the question is Mole Concept and Molar Masses topic in chapter Chemistry Basic Concepts of Chemistry – Class 11
Answer» The correct option is (a) 6.022 x 10^22 particles To elaborate: One MOLE of any substance contains AVOGADRO’s number of particles. Its VALUE is 6.022×10^23 atoms. But here the question is about 10 moles of a substance. So MULTIPLY the Avogadro’s number by 10. Therefore 6.022×10^23 x 10 = 6.022×10^22.

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