Chem word problem

  • Thread starter Zed
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  • #1
Zed
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chem word problem !! plz help

Hi ,

This is a Hw question i have am stuck on i dont know how to solve it ...

A pharmacist is to prepare 16 milliliters of special eye drops for a glaucoma patient. The eye-drop solution must have a 5% active ingredient, but the pharmacist only has 10% solution and 1% solution in stock.


How much of 10% solution should be used to fill the prescription?

How much of 1% solution should be used to fill the prescription?


plz help

thx
 

Answers and Replies

  • #4
Gokul43201
Staff Emeritus
Science Advisor
Gold Member
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Assume the pharmacist uses x ml of 10% solution and 16 - x ml of 1% solution. Compare the total volume of active ingredient with the required number and solve for x.
 

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