The partial pressure of xenon (Xe) is calculated to be 6.675 atm by subtracting the partial pressures of helium (0.859 atm) and argon (0.509 atm) from the total pressure of the mixture (8.043 atm).
To calculate the partial pressure of xenon (Xe) in the mixture, we use Dalton's law of partial pressures, which states that the total pressure (Ptot) of a gas mixture is the sum of the partial pressures of the individual gases. Therefore, we subtract the given partial pressures of helium (He) and argon (Ar) from the total pressure to find the partial pressure of xenon (Xe).
The total pressure of the mixture is given as 8.043 atm. The partial pressures of helium and argon are 0.859 atm and 0.509 atm respectively. To find the partial pressure of xenon:
PXe = Ptot - (PHe + PAr)
PXe = 8.043 atm - (0.859 atm + 0.509 atm)
PXe = 6.675 atm