contestada

A pipet is used to transfer 9.00 mL of a 3.50 M stock solution in flask "S" to a 25.00-mL volumetric flask "A," which is then diluted with DI H2O to the calibration mark. The solution is thoroughly mixed. Next, 17.00 mL of the solution in volumetric flask "A" is transferred by pipet to a 50.00-mL volumetric flask "B" and then diluted with DI H2O to the calibration mark. Calculate the molarity of the solution in volumetric flask "B."

Respuesta :

cristisp93

The molarity of the solution in the flask "B" is 0.43 M.

Explanation:

For each dilution we determine the concentration by using the following formula:

initial concentration × initial volume = final concentration × final volume

Dilution from flask "S" to flask "A":

3.5 M × 9 mL = X  M × 25 mL

X = (3.5 × 9) / 25 = 1.26 M

Dilution from flask "A" to flask "B":

1.26 M × 17 mL = Y  M × 50 mL

Y = (1.26 × 17) / 50 = 0.43 M

We found that the molarity of the solution in the flask "B" is 0.43 M.

Lean more:

about problems with molar concentrations

brainly.com/question/9183831

#learnwithBrainly

Otras preguntas