Final answer:
When sharing a lab balance, do not place samples directly on it, alert your TA or instructor about issues, clean the balance after use, and leave a note if you have tared the balance for your glassware.
Step-by-step explanation:
When sharing a lab balance with other students, it is very important to follow best practices to maintain safety and accuracy in the laboratory. It is not advisable to place samples directly onto the balance (a). Instead, use a container like a watch glass or weighing paper to avoid contamination. You should alert your TA or instructor about any issues with the balance (b), ensuring the reliability of measurements for everyone. After you're done, appropriately clean the balance area (c) to prevent cross-contamination and maintain a clean working environment. Lastly, leaving a note about the balance you've tared (d) is good practice to communicate with other users about the balance status, avoiding confusion and ensuring accurate measurements. Remember, safety protocols and accurate data collection are of utmost importance in the laboratory setting.