Answer :
Final answer:
The analytical balance is the most precise and sensitive type of balance used in chemistry, capable of measuring mass to the nearest milligram or even microgram. It operates in an enclosed space to mitigate external interferences and is essential for accurate chemical analysis. Other balances, like double beam and top-loading balances, do not provide the same level of precision.
Explanation:
Understanding Different Types of Balances
In the context of precise measurements in a chemistry lab, the type of balance that provides high precision and sensitivity is the analytical balance. These balances are designed specifically to measure mass with extreme accuracy, often to the nearest 0.001 grams or even 1 microgram in some research-grade models.
The analytical balance is typically enclosed in a glass case to protect against air currents that can affect readings, while the sample is handled with forceps to avoid contamination from moisture or oils on hands. For example, earlier models could read directly to 1 milligram, whereas modern electronic balances can achieve sensitivities commonly at 0.1 mg for student laboratory use.
In contrast, types like the double beam balance, top-loading balance, and triple beam balance offer less precision in comparison, as they are primarily used for general weighing tasks rather than for highly sensitive measurements required in experimental chemistry.
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