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13 April, 16:45

A student times how long it takes different liquids to vaporize when placed in a vacuum chamber. Most vaporize within a few seconds. How should the student time the vaporization?

A. Estimate by counting aloud

B. Use a clock with a second hand

C. Observe a digital clock with no second hand

D. Use a digital timer that shows tenths of a second

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Answers (1)
  1. 13 April, 16:55
    0
    Correct answer is D

    Explanation:

    Use a digital timer that shows tenths of a second.

    As in the question is asked that most liquids are vaporized with in few seconds. So, student should use most precise instrument to measure the time.

    So, the digital timer is the most precise instrument which can be used to measure the time accurately. As it can measure to the tenth of a second.

    And by using this, student can measure the vapourization time for other liquids also.
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