Chemistry > QUESTIONS & ANSWERS > CHEM 005.Midterm Exam 2: Self-proctored, 30 questions and answers all graded A+ (All)

CHEM 005.Midterm Exam 2: Self-proctored, 30 questions and answers all graded A+

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Instruc!ons This quiz was locked Jul 16 at 11:59pm. A!empt History Attempt Time Score LATEST Attempt 1 21 minutes 94.4 out of 120 Score for this quiz: 94.4 out of 120 Submitted Jul 3 at 10:37pm ... This attempt took 21 minutes. This exam should be taken with only a calculator and the Chem 005 Exam 2 Useful Info file. Exam dates are firm and the exams can only be taken during the dates specified in the course schedule. If you are unable to take the exam during the assigned week please contact the instructor immediately - exceptions may be made for special circumstances at the discretion of the instructor. Caution: Time limit for the exam is 90 minutes. Make sure you have enough time to take that test. Once the exam is delivered, you will only have 90 minutes to take, save, and resume the exam. Pay attention to the countdown indicating time remaining, located at the top right of the exam screen, and make sure that you submit the exam before time runs out. Please do not open other Canvas programs during the exam. Question 1 4 / 4 pts The triple point is ______________. the point in a phase diagram where the solid, liquid and gas phases of a substance coexist at equilibrium. Correct! the point where all three phases are unstable. three places in a phase diagram where the solid, liquid and gas can coexist. a three-dimensional phase diagram. Question 2 4 / 4 pts On a phase diagram, the melting point is the same as __________. the triple point the freezing point Correct! the boiling point the vapor-pressure curve (BLB11.54n) What phase transitions do all these points (curves) correspond to? Question 3 4 / 4 pts What is pressure? Check all that apply. The ratio of a force exerted (e.g., by atmospheric gas) to the surface area over which it’s applied. Correct! A quantity measured in a variety of units, including pounds per square inch (psi), Pascals, millimeters of mercury (mmHg), Torrs, and atmospheres. Correct! A quantity that tends to change with altitude. Correct! A quantity that can be manipulated in cooking to allow phase transitions to occur at different temperatures. [Show More]

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