Question

The mole fraction of argon gas in the atmosphere of Titan, Saturn’s largest moon was estimated by the scientists to be 0.120. The total pressure on the surface of Titan is 1220 torr.

a.)partial pressure in atm of argon gas in Titan’s atmosphere

b.)mass (in grams) of argon gas in 295 L of the atmosphere of Titan at 275 K

Answer 1

Given that mole tradion, Y_A = 0.12 Total pressure, P^T = 1200 zorr = 1. 605 atm using raozelts law, we can calculate partial pressure P_A = y_A P^T = 0.12 times 1.605 P_A = 0.1926 atm By using ideal gas law PV = nRt where[Molecular = 39.95 g/m weight of Argon Given that V = 295 L T = 275 K by valculating, P_n = 0.1926 atm where, R = 0.08205 atm L/K mol suubstitut all known values into ideal gas law n = Pv/RT = 0.1962 times 295 L/0.08205 atm L/K mol times 275 K n = 2.518 moles of argon is present mass of argon = 2.518 mol times 39.95 g/mol m = 100.56 grams