0.350 M NaCl solution using a stock solution with a concentration of 2.00 M NaCl, you can use the formula:
C1V1 = C2V2
Where:
C1 = Concentration of the stock solution
V1 = Volume of the stock solution
C2 = Desired concentration of the final solution
V2 = Desired volume of the final solution
In this case, we know the following values:
C1 = 2.00 M
C2 = 0.350 M
V2 = 275 ml
Now we can calculate V1, the volume of the stock solution needed:
C1V1 = C2V2
(2.00 M) V1 = (0.350 M) (275 ml)
V1 = (0.350 M) (275 ml) / (2.00 M)
V1 ≈ 48 ml
To prepare a 0.350 M NaCl solution with a volume of 275 ml, you would need to measure 48 ml of the 2.00 M NaCl stock solution and then dilute it with sufficient solvent (such as water) to reach a final volume of 275 ml.
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