Problem: A 1.000 mL sample of acetone, a common solvent sometimes used as a paint remover, was placed in a small bottle whose mass was known to be 38.0015 g. The following values were obtained when the acetone-filled bottle was weighed: 38.7798 g, 38.7795 g, and 38.7801 g. How would you characterize the precision and accuracy of these measurements if the true mass of the acetone was 0.7791 g?

FREE Expert Solution

Recall: Precision deals with the repeatability of measurements, while accuracy deals with how close a measurement is to the "actual" value.

To get the measured mass of acetone, we first need to subtract the mass of the bottle (38.0015 g) from the measured mass of bottle and acetone:

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Problem Details

A 1.000 mL sample of acetone, a common solvent sometimes used as a paint remover, was placed in a small bottle whose mass was known to be 38.0015 g. The following values were obtained when the acetone-filled bottle was weighed: 38.7798 g, 38.7795 g, and 38.7801 g. How would you characterize the precision and accuracy of these measurements if the true mass of the acetone was 0.7791 g?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Accuracy & Precision concept. If you need more Accuracy & Precision practice, you can also practice Accuracy & Precision practice problems.

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Based on our data, we think this problem is relevant for Professor Bindell's class at UCF.