Final answer:
When using a Class II₁I prescription balance, the weights should be placed on the right pan.
Step-by-step explanation:
When using a Class II₁I prescription balance, you should place the weights on the right pan.
A Class II₁I prescription balance is a type of balance used in pharmaceutical compounding to accurately measure mass. It consists of two pans, marked as left and right. To achieve accurate measurements, the weights should be placed on the right pan.
Placing the weights on the correct pan ensures that the balance is properly calibrated, allowing for precise measurements.