A sample of a compound of xenon and fluorine was confined in a bulb with a pressure of 18 torr….

A sample of a compound of xenon and fluorine was confined in
a bulb with a pressure of 18 torr. Hydrogen was added to the bulb until the
pressure was 72 torr. Passage of an electric spark through the mixture produced
Xe and HF. After the HF was removed by reaction with solid KOH, the final
pressure of xenon and unreacted hydrogen in the bulb was 36 torr. What is the
empirical formula of the xenon fluoride in the original sample? (Note: Xenon
fluorides contain only one xenon atom per molecule.)