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In experiments 1, 2, and 3, what is the change in pressure (Ptotal) after 20,000 seconds when the initial pressure of oxalic acid is 65.8 mmHg, 92.1 mmHg, and 111 mmHg, respectively?

A. 27.4 mmHg
B. 37.9 mmHg
C. 45.8 mmHg
D. Varies

Answer :

Final answer:

Without knowledge about the exact experimental conditions or what may trigger any potential pressure change, it's tough to give an accurate response. Nonetheless, if every experiment leads to the same rate of pressure change, the pressure change for all experiments could be the same. Yet, if the initial pressure or other experiential conditions influence the rate of the pressure change, the change might vary for each experiment.

Explanation:

Without having depth details on the conditions of the experiments or the source of any potential pressure change, it's challenging to provide a precise answer. The question is about the total pressure (Ptotal) observed after 20K seconds in separate experiments where oxalic acid exhibited different initial pressures.

Assuming each experiment leads to the same rate of pressure change, the change in pressure when the starting pressure of oxalic acid is 65.8 mmHg, 92.1 mmHg, and 111 mmHg could possibly be the same. However, if the rate of pressure change is influenced by the initial pressure or other experimental conditions, the change could vary across the three experiments.

Thus, the answer to this question could be option (d) Varies. Nevertheless, considering the specifics of your question and the data provided, it would be a good idea to clarify these factors with your teacher or refer to your study material for the specific nature of the experiment.

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