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5 September, 18:12

1. which volume has the most uncertainty associated wit the measurement?

a. 10mL

b. 10.0mL

c. 10.00mL

b. all have the same degree of uncertainty

2. A beaker contains 145.675 mL of a saline solution. If 24.2 mL of the saline solution are removed from the beaker, what volume of solution remains?

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Answers (1)
  1. 5 September, 19:41
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    1. The option a. 10 mL has the most uncertainty associated with it, because it has only 2 significative figures, while 10.0 mL has three significant figures and 10.00 has four significant figures.

    2. The volume of solution that remains is 145.675 mL - 24.2 mL = 121.475 mL rounded to one decimal = 121.5 mL, given that the measure with the most uncerntainty has only one decimal.
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