The following water measurements are made: 18 mL of water measured with a beaker, 128.7 mL of

Name: Problem 42, Chapter 2: Introductory Chemistry
Uploaded: 2021-03-13T18:03:38-08:00
Duration: 1 min 22 s
Channel: Niamat Khuda
Description: The following water measurements are made: 18 mL of water measured with a beaker, 128.7 mL of water measured with a graduated cylinder, and 23.45 mL of water measured with a buret. If all of these water samples are then poured together into one container, what total volume of water should be reported? Support your answer.

step 1 you guys let's do problem 42 in this problem we need to reopen the total volume of water and the

Question

The following water measurements are made: $18 \mathrm{~mL}$ of water measured with a beaker, $128.7 \mathrm{~mL}$ of water measured with a graduated cylinder, and $23.45 \mathrm{~mL}$ of water measured with a buret. If all of these water samples are then poured together into one container, what total volume of water should be reported? Support your answer.

   The following water measurements are made: $18 \mathrm{~mL}$ of water measured with a beaker, $128.7 \mathrm{~mL}$ of water measured with a graduated cylinder, and $23.45 \mathrm{~mL}$ of water measured with a buret. If all of these water samples are then poured together into one container, what total volume of water should be reported? Support your answer.

Introductory Chemistry

Steven S. Zumdahl,… 9th Edition

Chapter 2, Problem 42

Instant Answer

Solved by Expert Niamat Khuda

03/13/2021

Step 1

This can be done by adding the three measurements together: \[18 \mathrm{~mL} + 128.7 \mathrm{~mL} + 23.45 \mathrm{~mL}\] Show more…

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The following water measurements are made: $18 \mathrm{~mL}$ of water measured with a beaker, $128.7 \mathrm{~mL}$ of water measured with a graduated cylinder, and $23.45 \mathrm{~mL}$ of water measured with a buret. If all of these water samples are then poured together into one container, what total volume of water should be reported? Support your answer.

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Key Concepts

Addition of Measurements

When combining measured quantities, the total volume is calculated by directly adding the individual volumes together. It is important to sum the measurements correctly regardless of the instruments used, as long as all parts refer to the same physical quantity.

Significant Figures

Significant figures indicate the precision of a measurement and must be considered when reporting a calculated result. When adding measurements, the result should be rounded to the same decimal place as the measurement with the least precision to avoid implying greater accuracy than the original data supports.

Measurement Uncertainty

Measurement uncertainty describes the potential error or variability inherent in any measurement. Different instruments have different inherent uncertainties, and recognizing these uncertainties helps in determining the proper number of significant figures and the reliability of the resultant sum.

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