A nurse wants to add water to 30 ounces of a 10% solution of benzalkonium chloride to dilute it to an 8% solution. How much water must she add?
1 Answer
Sep 5, 2016
7.5 oz
Explanation:
Using the standard dilution equation:
Where:
Rearranging for
We already have 30 oz, so just need to add 7.5 oz.
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