Measure the Mass of a Solid
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http://www.dvaction.org/dvaction/movies/progressive/euc-NU-0045.mov

Remove the container from the balance. Carefully transfer the chemical substance into the container. Place the container back on the balance pan and close all windows. Wait for the reading to stabilize.
The displayed value is the mass of the chemical substance. All digits in the display panel should be included in the mass measurement. If the value of the last digit fluctuates, approximate its value.