Question

Please show steps to solve 7 and 8 thank you!

7) Version 2 7) Which of the following items are true for the phase dias below? the following items are true for the phase diagram of carbon dioxide as seen Supercritical . Solid Pressure (not to scale) - 0.7 C -78.5°C Temperature (not to scale) A) Unlike many other substances, carbon dioxide does not have a pressure and temperature combination where liquid, solid, and gas phases coexist. B) Carbon dioxide has a normal boiling point of 31 °C. C) None of the other selections are true statements. D) Carbon dioxide lacks a boiling point. E) Carbon dioxide lacks a normal boiling point. 8 ) 8) A mystery solution (with a mole fraction of solute of 0.15) has a vapor pressure of 65. 0 torr at 85.0°C. What is the vapor pressure of the pure solvent at 85.0°C? Assume that the solute is a nonelectrolyte. A) 9.75 torr B) 102 torr C) 76.5 torr D) 55.3 torr E) 433 torr

Answer 1

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