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3 March, 23:52

Consider that you collect hydrogen gas over water in an upside-down test tube. If the atmospheric pressure is 1.00, which of the following statements are true? Select all that apply. A. The total pressure in the test tube is higher than the atmospheric pressureB. The total pressure in the test tube is equal to the atmospheric pressureC. The total pressure in the test tube is lower than the atmospheric pressureD. The pressure of hydrogen in the test tube is higher than the atmospheric pressureE. The pressure of hydrogen in the test tube is equal to the atmospheric pressureF. The pressure of hydrogen in the test tube is lower than the atmospheric pressure

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  1. 4 March, 00:19
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    Correct answers are B and F.

    Explanation:

    Inside the test tube after a certain time, the pressure inside of the test tube must be equal to the atmospheric pressure, the hydrogen displaces the water inside the tube until the pressure is the same with the atmosphere.

    The hydrogen pressure inside the tube must be lower than the atmospheric pressure because otherwise the water inside it would go out until it reaches the atmosphere pressure. The atmospheric pressure is equal to the addition of the hydrogen and water pressures.
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