10
QuizMultiple Choice

Using Math to Analyze Data

Question 10 • *26-27 CFISD TX-Chemistry A CR

In an experiment, Theresa measured 15.05 mL of water. She must have used a

Answer
A
flask that had markings every 25 mL.
B
beaker that had markings every 20 mL.
C
buret that had markings every 0.1 mL.
D
graduated cylinder that had markings every 1 mL.

Explanation

A volume recorded as 15.05 mL is precise to the hundredth of a milliliter. A buret with markings every 0.1 mL allows a measurement to be estimated one digit beyond the marked divisions, to 0.01 mL. The other instruments’ markings are too widely spaced to support that precision.

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