**Example 3: Volume Calculations**In this example, we solve two simple volume calculations involving addition and subtraction of milliliters (mL).1. **Addition:** \[ 40.00 \, \text{mL} + 0.8 \, \text{mL} = 40.80 \, \text{mL} \] Here, we add 0.8 mL to 40.00 mL, resulting in a total volume of 40.80 mL.2. **Subtraction:** \[ 40.00 \, \text{mL} - 0.8 \, \text{mL} = 39.20 \, \text{mL} \] In this calculation, we subtract 0.8 mL from 40.00 mL, resulting in a remaining volume of 39.20 mL.These examples illustrate the straightforward process of adding and subtracting volumes, which is essential in scientific measurements and experiments. **Micropipette Accuracy and Precision***Problem Statement:*When measuring 40 mL, the micropipette has a tolerance limit of ± 0.8 mL. What do the micropipette calculations indicate about your technique? Support your answer using the calculated statistics.---*Explanation:*This exercise requires the evaluation of the technique used for measuring liquids with a micropipette. The tolerance limit indicates the acceptable range of deviation from the 40 mL target measurement, which is 39.2 mL to 40.8 mL. Examining the statistical calculations will help determine the accuracy and precision of the technique, such as calculating mean, standard deviation, and any errors in measurements.The task is to use calculations to assess the effectiveness of the technique and ensure the results fall within the specified tolerance range.---

Answered: 3. When measuring 40 mL, the…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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**Example 3: Volume Calculations**

In this example, we solve two simple volume calculations involving addition and subtraction of milliliters (mL).

1. **Addition:**
\[
40.00 \, \text{mL} + 0.8 \, \text{mL} = 40.80 \, \text{mL}
\]
Here, we add 0.8 mL to 40.00 mL, resulting in a total volume of 40.80 mL.

2. **Subtraction:**
\[
40.00 \, \text{mL} - 0.8 \, \text{mL} = 39.20 \, \text{mL}
\]
In this calculation, we subtract 0.8 mL from 40.00 mL, resulting in a remaining volume of 39.20 mL.

These examples illustrate the straightforward process of adding and subtracting volumes, which is essential in scientific measurements and experiments.

**Micropipette Accuracy and Precision**

*Problem Statement:*

When measuring 40 mL, the micropipette has a tolerance limit of ± 0.8 mL. What do the micropipette calculations indicate about your technique? Support your answer using the calculated statistics.

---

*Explanation:*

This exercise requires the evaluation of the technique used for measuring liquids with a micropipette. The tolerance limit indicates the acceptable range of deviation from the 40 mL target measurement, which is 39.2 mL to 40.8 mL. Examining the statistical calculations will help determine the accuracy and precision of the technique, such as calculating mean, standard deviation, and any errors in measurements.

The task is to use calculations to assess the effectiveness of the technique and ensure the results fall within the specified tolerance range.

---

Expert Solution

Step 1: Understanding the Significance of Tolerance Limits in Micropipette Accuracy

The micro pipette's tolerance limit of ±0.8 mL is an important measure that shows how well the pipette can be relied upon to be accurate and precise. Essentially, it's the maximum amount by which the pipette can vary from the target volume, which in this case is 40 mL, and still be considered acceptable according to the required standards.

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