The number of atoms can be calculated by multiplying the number of moles with the Avogadros number. The Avogadros number is 6.022 x 10^23 atoms / moles, therefore:
number of atoms = 2.36 moles * 6.022 x 10^23 atoms / mole
number of atoms = 1.42 x 10^24 atoms
Answer:
1.42 x 10^24 xenon atoms