When measuring a liquid in a beaker that is marked with 0.1 ml increments, it's crucial to consider the resolution of the measurement and the correct number of significant figures.
1. Understand the Markings: The beaker is marked with 0.1 ml increments, which means each small line represents an additional 0.1 ml. This level of precision affects the number of significant figures that can be accurately reported.
2. Meniscus Reading: The question states that the bottom of the meniscus sits exactly on the 100 ml line. The meniscus is the curve seen at the liquid's surface. To measure accurately, always read the bottom of the meniscus at eye level.
3. Correct Significant Figures: Since the beaker's smallest divisions are 0.1 ml, the correct measurement should reflect this precision. Therefore, the measurement should include one decimal place to indicate the precision of the measurement.
4. Final Measurement: Given that the meniscus is on the 100 line and the smallest division is 0.1 ml, the appropriate way to express this measurement with the correct number of significant figures is:
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100.0
```
Thus, the measurement of the liquid, considering the precision of the instrument and the position of the meniscus, is 100.0.
