You need 6,9 mL stock solution.
The volume is 0,3 mL.
M1
it is very easy to prepare working solution from a stock solution we use the formula for this purpose which is: C1V1 = C2V2 C1 is the concentration of the stock solution V1 required volume from the stock solution C2 concentration of the working solution V2 volume of the working solution
10 mg/ml stock solution
A stock solution is a highly concentrated solution that is usually diluted in labs to get more precise moralities in experiments.
Image result for You prepare a less concentrated H C l solution from a stock solution with 12m concentration. If you too 100g of the stock solution to prepare 4 MHCl solution how much water is needed to prepare o find solution 9density HCL(12) = 1,89/ml? The concentration would be 0.76 mol/L.
The volume is 0,3 mL.
M1
it is very easy to prepare working solution from a stock solution we use the formula for this purpose which is: C1V1 = C2V2 C1 is the concentration of the stock solution V1 required volume from the stock solution C2 concentration of the working solution V2 volume of the working solution
Droppers help to fill volumetric flasks to the mark. They are used in qualitative tests, whereby the accuracy of the amount of solution is not needed. Basically, use them when you need to draw solution from a stock solution (avoiding contamination of the stock) and when you need to fill solutions to a mark (dropwise).
10 mg/ml stock solution
A stock solution is a highly concentrated solution that is usually diluted in labs to get more precise moralities in experiments.
A stock solution that is used in a dilution is known as a dilute solution. A dilute solution reduces the Ph of a chemical.
How do I find the opening stock when given the closing stock
Generally, yes.
1 part of stock+ 2part of dillution
500mg/l