A student is given a cube of metal that is known to have mass of 125.0 grams. She measures the mass of the metal three different times with the following results: 125.1 g, 124.8 g, 125. g. What can be said about her precision and accuracy?

Question

Chemistry

Caleb Vaughn

4 April, 04:17

A student is given a cube of metal that is known to have mass of 125.0 grams. She measures the mass of the metal three different times with the following results: 125.1 g, 124.8 g, 125. g. What can be said about her precision and accuracy?

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Answers (1)

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Catherine Burke · Answer 1

Her results are precise and accurate.

Explanation:

Precision is the ability to reproduce the same result in an experimental set up. From the results obtained, we can see that she was to a large extent able to replicate nearly the same values throughout the experimental set up.

Accuracy is the closeness of the observed value to the true value. We can conclude that she was able to obtain an accurate result which mimics the true value expected from the experimental set up.