195,333 views
2 votes
2 votes
If you add 8 g of salicylic acid to 84 g of an ointment base, what is the final concentration (w/w) of the product? Round to the nearest hundredths (w/w).Question 3 options:Answer will be in % nothing else! ACTIVE INGREDIENT will always be your numerator.NUMERATOR (ACTIVE INGREDIENT)--------------------------------DENOMINATOR (TOTAL) Numerator means the top part of your fractionThe (w/w) is telling you to divideSTEPS: Add 8 + 84 this will be your denominator totalthen multiply by 100 to add the % sign in #----- Divide = then multiply by 100 for the percent sign. What is your answer?#FINISH THE MATH FOR THE CORRECT ANSWER

User Bajo
by
2.6k points

1 Answer

15 votes
15 votes

Answer

Concentration = (8/92)*100 = 8.7%

Step-by-step explanation

Given:

mass of salicylic acid (active ingredient) = 8 g

mass of an ointment base = 84 g

Required: concentration (w/w) of the product?

Solution:

Total mass of the mixture = 8 + 84 = 92 g

Concentration = (8/92)*100 = 8.7%

User Clark Gaebel
by
3.1k points