Studypool Homework Help - Ap chemistry unit 7 progress check mcq test 2023 (2024)

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Ap chemistry Unit 7 Progress Check; MCQ Test 2023The graph above represents the data collected under certain conditions for thedecomposition of N2O4(g) according to the chemical equation above. Based on thegraph, at approximately which time is equilibrium established? - ANSWER D.At time D, because there are no observable changes in [NO2] and [N2O4].A sample of acetone is placed into a container. The container is sealed andattached to a pressure sensor, as shown in the diagram above. The container isallowed to sit on the lab table for a few minutes as the pressure in the container ismonitored at regular intervals. At the end of 2.00 minutes, some acetone liquidremains in the container. Which of the following best explains the pressure datapresented in the table above? - ANSWER C.The acetone vaporizes from the liquid at a constant rate and the rate ofcondensation increases until it becomes equal to the rate of evaporation and thepressure stays constant.A sample of pure NO2(g) in a sealed tube at 20°C is placed in a temperature bath at30°C. Observations of changes in the color, pressure, and mass of the mixture arerecorded as a function of time. Which of the following is an observation thatwould best support the claim that the reaction represented above has reachedequilibrium at 30°C? - ANSWER C.The total pressure of the system decreases then reaches a constant value becauseat equilibrium the amounts of reactant and product no longer change.When AgCl(s) ...
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