Answer is [tex]2.18017\times10^{-22}gms[/tex].
Explanation: To calculate the mass of 1 Xe-atom , we will require atomic mass of Xe which is 131.29amu.
This atomic mass is the mass of 1 mole of 1 Xe-atom. One mole of Xe-atom is [tex]6.022\times10^{23}[/tex] atoms of Xe. We will use this relation to convert Mass of Xe-atom into grams.
[tex]\frac{\text{mass of 1 atom}}{atom}=\frac{\text{mass of 1 mole of atom}}{6.022\times10^{23}atoms}[/tex]
[tex]\text{mass of 1 atom}=\frac{\text{mass of 1 mole of atom}}{6.022\times10^{23}}[/tex]
[tex]\text{mass of 1 Xe-atom}=\frac{131.29}{6.022\times10^{23}}[/tex]
[tex]\text{mass of 1-Xe atom}=21.8017\times10^{-23}gms[/tex]
=[tex]2.18017\times10^{-22}gms[/tex]
