18 which of the following would be expected to have

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18. Which of the following would be expected to have the highest vapor pressure at room temperature?A. ethanol, bp = 78°CB. methanol, bp = 65°C. water, bp = 100°CD. acetone, bp = 56°CC
19. How many kJ of heat are required to raise the temperature of 484 grams of ethanol (MM = 46)from 53.4°C to 78.4°C and then vaporize it completely?specific heat ethanol(l)2.46 J/g°CDHvapethanol43.3 kJ/molnormal bp ethanol78.4°C
CH 222Exam #2Practice Exam 1Page 6Questions 20 and 21:Refer to the vapor pressure curves for liquids A and B:20. Which substance has the stronger intermolecular forces?
21. The normal boiling point for substance B is approximately°C
22. Consider this heating curve for a substance X that starts as a solid below its freezing point and isheated uniformly.What is happening to theaveragekinetic energy during line segment BC of the heating curve?A. increasingB. decreasingC. remains the same
CH 222Exam #2Practice Exam 1Page 7Questions 23 - 24:Refer to the phase diagram for CO2shown below.23. To answer this question, refer to both the phase diagram shown above and the heating curve shownwith question #22.The transition from A to C on the CO2phase diagram above correlates withwhich section of the heating curve?
24. In going from point A to B to C on the phase diagram, which phase transitions does CO2undergo?
CH 222Exam #2Practice Exam 1Page 8
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