Posted by **Anonymous** on Tuesday, March 26, 2013 at 6:13pm.

How would you go about making 250ml of a 20X stock solution of NaCl to dilute later to a final concentration of 50mM? I know that the molecular weight of NaCl is 58.44 but I am not sure where to start. I need to figure out the amount of NaCl and water needed. Thank you!

- Math -
**Anonymous**, Tuesday, July 14, 2015 at 11:12am
14.61 g of NaCl

## Answer this Question

## Related Questions

- Math(Please help) Thank you - How would you go about making 250ml of a 20X stock...
- Microbiology - You need 3.5L of 50mM NaCl from your 20X stock. How would you ...
- science-chem - first, thanks so much Bob for helping me!!!! Q4.you will be asked...
- chemistry - In a laboratory experiment, a 18.0 ml sample of NaCl solution is ...
- Chemistry - If the same solute is dissolved in two different solvents to the ...
- math - you need to prepare 5ml NaCl solution . you already have a stock solution...
- science - In the lab you need to make 1.00 L of a 0.300 M NaCl solution. You had...
- chemistry - If you know that the mass concentration of a NaCl solution is 58.5 g...
- Chemistry - What is the molarity of a solution of Mg(OH)2 if the solution ...
- Chemistry - calculate the final concentration if 4.0 L of 1.5 M NaCl and 2.0 L ...

More Related Questions