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batspy

  • one year ago

Sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear to purple. Which of these tools should she use for this purpose? an electronic balance a stopwatch a barometer a graduated cylinder

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  1. Rushwr
    • one year ago
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    what do u think ?

  2. batspy
    • one year ago
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    i think barometer

  3. Rushwr
    • one year ago
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    No Barometer is used to measure the atmospheric pressure. Out of all the instruments here only the stopwatch can measure time.

  4. Rushwr
    • one year ago
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    Electrical balance is used to measure masses. ( small ones ) the graduated cylinder to measure volumes

  5. batspy
    • one year ago
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    a graduated cylinder my other answer wood be a graduated cylinder

  6. Rushwr
    • one year ago
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    "Sian wants to measure the number of seconds" That means sian wants to measure time.right? The only instrument that we can measure time in the given list is the stopwatch. So the answer is stop watch :) Understand ?

  7. batspy
    • one year ago
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    thanks

  8. Rushwr
    • one year ago
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    no problem :)

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