A pharmacist prepared an ointment using 28.5g of zinc oxide instead of the 30.5g required. What...
A pharmacist prepared an ointment using 28.5g of zinc oxide instead of the 30.5g required. What is the percent error on the basis of the desired quantity?
Homework Answers
Ans) Prepared ointment: 28.5g of zinc oxide
Required ointment: 30.5g of zinc oxide
So 30.5-28.5 = 2g less than required ointment.
Formula: %error = Approx-exact / Exact × 100
= 30.5-28.5/28.5 × 100
= 2/28.5 × 100
= 7.017
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