Tesfaye D. answered • 06/02/18

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The total pressure (P) can be calculated using ideal gas equation: PV = nRT,

for the above problem n is the total number of moles, thus

n =PV/RT

P = 2.36 atm, V = 8.89 L, T = 22

^{o}C + 273 = 295 K, R = 0.0821 L.atm/mol.K (it is a constant).I will let you to do the calculation. you should get n = 0.866 mol

Thus, 0.866 = mol of Ar + mol of Xe

There is 16.2 g of Ar = 0.406 mol (use the molar mass of Ar and convert 16.2 g into mol)

0.866 mol = 0.406 mol + mool Xe

mol Xe = 0.866 mol - 0.406 mol = 0.46 mol

Thus, now using the molar mass of Xe convert 0.46 mol to gram.

FYI: the answer is 60.4 g