Textbook Question
Read each measurement to the correct number of significant figures. Laboratory glassware should always be read from the bottom of the meniscus.
1. Intro to General Chemistry
Significant Figures: Precision in Measurements
Multiple Choice
Which piece of glassware provides the most precise measurement based on significant figures?
A
Erlenmeyer flask
B
Volumetric pipet
C
Graduated cylinder
D
Beaker
Verified step by step guidance1
Understand that precision in volumetric glassware is related to how finely the volume can be measured, which is reflected in the number of significant figures the instrument can provide.
Recall the typical uses and precision of each piece of glassware: Erlenmeyer flasks and beakers are generally used for mixing and approximate volume measurements, so they have lower precision.
Graduated cylinders are designed to measure volumes more accurately than beakers and flasks, with markings that allow for estimation to a certain number of significant figures.
Volumetric pipets are calibrated to deliver a very specific volume with high precision, often to four significant figures, making them the most precise among the options listed.
Therefore, by comparing the typical precision and calibration of each glassware, conclude that the volumetric pipet provides the most precise measurement based on significant figures.
Related Videos
Related Practice
