Answer:
5%.
Explanation:
We have been given that a pharmacist attempts to weigh 120 mg of codeine sulfate on a balance with a sensitivity requirement of 6 mg.
To find the maximum potential error, we need to figure out 6 mg is what percentage of 120 mg.
![\text{The maximum potential error}=(6)/(120)* 100\%](https://img.qammunity.org/2020/formulas/mathematics/college/rh2nakcuf0wk28zctvbtao4b17hk4kojba.png)
![\text{The maximum potential error}=0.05* 100\%](https://img.qammunity.org/2020/formulas/mathematics/college/fhbvlaklo829ro3pk6j5qfa73nxivpu5gd.png)
![\text{The maximum potential error}=5\%](https://img.qammunity.org/2020/formulas/mathematics/college/bryq8evzd1m6wweeql39eiqvs1jzdw9y24.png)
Therefore, the maximum potential error is 5%.