Xeon hexafluoride was the first noble gas compound synthesized. The solid reacts rapidly with the silicon diox

Xeon hexafluoride was the first noble gas compound synthesized. The solid reacts rapidly with the silicon dioxide in glass or quartz containers to form liquid XeOF4 and gaseous silicon tetrafluoride. What is the presure in a 1.977 L container at 22.19 °C after 18.77 g xenon hexafluoride reacts? (Assume that silicon tetrafluoride is the only gas present and that is occupies the entire volume.)

2 XeF6 + SiO2 → 2 XeOF4 + SiF4(g)

(18.77 g XeF6) / (245.2840 g XeF6/mol) x (1/2) = 0.038262 mol SiF4

PV = nRT
P = nRT/V = (0.038262 mol) x (0.08205746 L atm /K mol) x (22.19 + 273.15 K) /
(1.977 L) = 0.4690 atm