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One mole of any substance contains how many particles, to four figures?
A3.022 x 10^23
B9.022 x 10^23
C1.022 x 10^23
D6.022 x 10^23
Answer & Solution
Correct answer: D. 6.022 x 10^23
1. The number of particles in a mole is fixed.
2. It is called the Avogadro number.
3. Its value is 6.022 x 10^23.
_Source: syllabus Science Class IX, Chapter 3, Atoms and Molecules._
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