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Unformatted text preview: .. ...what is the mole fraction of helium? Answer a. 0.030 b. 0.20 ✔ c. 0.25 d. 0.50 e. 0.75 f. 0.80 ituation: ined with 2.00 L of Ne g Assuming no temperat gas at 1.5 atm at a temperature of 25.0 °C to make a ture change and that He and Ne can be approxi-Question 4 The atmospheric surface pressure on mately 4% various other gases. Given present per cubic centimeter at the su Answer a. 62 mg ✔ b. 65 mg c. 62 g d. 65 g e. 99 mg Venus is 90 bar and is c n a surface temperature urface? Assume ideal b composed of 96% coarbon dioxide and approxi-re of 460 °C, what is the mass of carbon dioxide behavior. Question 5 Calculate the pressure exerted by 1.00 volume of 150 cm 3 at a temperature o Answer a. 0.571 atm b. 13.4 atm c. 763 atm ✔ d. 971 atm e. 102 katm 0 mol ethane behaving of 770 °C. For ethane, as a van der Waals gas when it is confined to a , a = 5.507 atm ⋅ L 2 /mol 2 and b = 0.0651 L/mol....
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- Spring '09