So i know everybody says that they need help asap and stuff, and tbh i have until umm 11:59 to turn this in so if u get to this later thats cool too. thx guys : Sorry for posting this a million times btw i'm honestly wasting points at this point but hey if u know the answer plz help
Sally Smith is a chemist with XYZ Pharmaceutical. She mixes a 9% solution of sulfuric acid with a 30% solution of sulfuric acid to produce an 18% solution. How much 9% solution and how much 30% solution will be needed to make 21L of 18% solution?