Question

question 3 1 pts when measuring a liquid in a graduated cylinder, an estimate of the last digit is made by using the bottom of the _. meniscus apex troposphere nucleus question 4 1 pts in determining the volume of the liquid in the graduated cylinder, the last digit is an estimate and is therefore _. uncertain certain exact precise

Explanation:

• For Question 3: In laboratory practice, when measuring liquid volume in a graduated - cylinder, the bottom of the meniscus is used to estimate the last digit of the measurement. The meniscus is the curved surface of the liquid.
• For Question 4: Since the last digit in a graduated - cylinder volume measurement is an estimate, it is uncertain. It represents the level of precision of the measuring instrument and the observer's judgment.

Answer:

Question 3: A. meniscus
Question 4: A. uncertain