Answer:
Mole and Number of Particles Calculations (n = N/NA) Chemistry Tutorial
Key Concepts
1 mole of any substance contains 6.022 × 1023 particles.
6.022 × 1023 is known as the Avogadro Number or Avogadro Constant and is given the symbol NA(1)
N = n × NA
N = number of particles in the substance
n = amount of substance in moles (mol)
NA = Avogardro Number = 6.022 × 1023 particles mol-1
N = n × (6.022 × 1023)
To find the number of particles, N, in a substance:
N = n × NA
N = n × (6.022 × 1023)
To find the amount of substance in moles, n :
n = N ÷ NA
n = N ÷ (6.022 × 1023)
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