In: Chemistry
Given the atomic radius of xenon, 1.3 Å, and knowing that a sphere has a volume of 4πr3/3, calculate the fraction of space that Xe atoms occupy in a sample of xenon at STP.
R = 1.3*10^-8 cm
V = 4/3πr3
= 4/3*(3.143*(1.3*10^-8)^3)
= 9.2*10^-24 cm^3
= 9.2*10^-27 L
V_total = V ×Av
9.2*10^-27*6.023*10^23 = 5.54116*10^-3 L
fraction of space that Xe atoms occupy in a sample of xenon at STP = 5.5411*10^-3/22.4
= 2.474 *10^-4