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2. Answer the following questions

E. How many particles are present in 1 mole of a substance ?
in Chapter 1: Some Basic Concepts of Chemistry by Expert (10.7k points)
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The number of particles present in 1 mole is 6.022\(\times 10^{23}\) 

It is Avogadro's number  equal to 6.022×1023 and is expressed as the symbol NA

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