Answered

Welcome to Westonci.ca, your ultimate destination for finding answers to a wide range of questions from experts. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

How much water should be added to 18ml of 10% alcohol solution  to reduce to reduce the concentration to 9%

Sagot :

[tex]10\%=\frac{10}{100}=0.1\\\\0.1\cdot18ml=1.8ml-clear\ alcohol\\\\9\%=\frac{9}{100}=0.09\\\\w-added\ water\ (ml)\\18ml+w-9\%\ alcohol\ solution\\\\0.09(18+w)=1.8\ \ \ \ /:0.09\\18+w=20\ \ \ /-18\\w=2\\\\Answer:2ml.[/tex]
18 * 0.1 = 1.8 ml

0.09(x + 18) = 1.8
18 + x = 20
x = 20 - 18
x = 2

2 ml.
We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Thank you for your visit. We're dedicated to helping you find the information you need, whenever you need it. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.