A beaker containing a sample of NaCl was weighed on a calibrated balance (Balance # 1) and a reading of 26.7587 g was recorded. A portion of the sample was then poured out into an Erlenmeyer flask, so the new reading is 24.7423 g.
1. Calculate the mass of the sample that was poured into the flask.
Initial reading =
Final reading =
2. Mass of sample transferred (calculated by difference)

Let's break down the steps to solve the problem.

### Given:
- **Initial reading on Balance #1** (before pouring out): \(26.7587 \, \text{g}\)
- **Final reading on Balance #1** (after pouring out): \(24.7423 \, \text{g}\)

### Calculation:
1. **Mass of the sample poured into the flask:**
   - This is calculated by subtracting the final reading from the initial reading.

   \[
   \text{Mass of sample transferred} = \text{Initial reading} - \text{Final reading}
   \]

   \[
   \text{Mass of sample transferred} = 26.7587 \, \text{g} - 24.7423 \, \text{g} = 2.0164 \, \text{g}
   \]

### Answer:
- **Initial reading** = \(26.7587 \, \text{g}\)
- **Final reading** = \(24.7423 \, \text{g}\)
- **Mass of sample transferred (calculated by difference)** = \(2.0164 \, \text{g}\)

Would you like further details or have any questions?

Here are some related questions:
1. What is the significance of using a calibrated balance in this experiment?
2. How does the precision of the balance affect the accuracy of the mass measurement?
3. What are some potential sources of error when transferring the sample to the flask?
4. How would you verify the accuracy of the balance used in the measurement?
5. Why is it important to record mass readings to several decimal places in laboratory settings?

**Tip:** Always ensure that the balance is tared (zeroed) before weighing any samples to avoid errors in mass measurement.

Learn how to calculate the mass transfer in a chemistry experiment involving NaCl using a calibrated balance. Step-by-step solution provided with initial and final readings. Suitable for advanced high school students and anyone interested in laboratory measurements.

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