Yahoo Answers is shutting down on 4 May 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Chemistry Help?
An ammonia solution is made by diluting 150 mL of the concentrated commercial reagent until the final volume reaches 1000 mL. What is the final molar concentration?
If you can answer this, please show me how you did it, as I have quite a few questions like this. Thank you :)
1 Answer
- hcbiochemLv 73 weeks agoFavourite answer
You didn't give a concentration for your concentrated commercial reagent, but using 14.5 M NH3:
The common formula for dilutions is:
M1V1 = M2V2
As long as you know any three of these, you can always calculate the 4th value. Just plug in what you have an solve for the unknown:
14.5 M (150 mL) = M2 (1000 mL)
M2 = 14.5 (150) / 1000 = 2.18 M NH3