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Archy [21]
2 years ago
15

Describe how to prepare the solution using a 250.0 mL volumetric flask by placing the steps in the correct order. Not all of the

steps will be used.
a. Transfer the measured amount of NaCl to the volumetric flask.
b. Dilute the solution with water to the 250.0 mL mark.
c. Add more water to the flask, but still under a total volume of 250.0 mL, and mix.
d. Hold the cap firmly in place and invert the flask many times.
e. Dissolve the NaCl in less than 250 mL of water and mix well.
f. Dissolve the measured amount of NaCl in 250 mL of water.
Chemistry
1 answer:
padilas [110]2 years ago
6 0

Answer:

The correct order will be

a. Transfer the measured amount of NaCl to the volumetric flask.

e. Dissolve the NaCl in less than 250 mL of water and mix well.

b. Dilute the solution with water to the 250.0 mL mark.

Explanation:

Preparation of NaCl solution in 250.0 ml volumetric flask:

Add the weighed NaCl directly to volumetric flask and add small amount of water to it and mix it will until all NaCl gets dissolved( if not add small water amount of water more)

After dissolving NaCl add the water upto the mark.

The correct order will be

a. Transfer the measured amount of NaCl to the volumetric flask.

e. Dissolve the NaCl in less than 250 mL of water and mix well.

b. Dilute the solution with water to the 250.0 mL mark.

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Explanation:

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Thus, we solve for the molarity of the acid to obtain:

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1 year ago
Reserpine is a natural product isolated from the roots of the shrub Rauwolfia serpentina. It was first synthesized in 1956 by No
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Explanation:

It seems the question is incomplete. However a web search us shows this data:

" Reserpine is a natural product isolated from the roots of the shrub Rauwolfia serpentina. It was first synthesized in 1956 by Nobel Prize winner R. B. Woodward. It is used as a tranquilizer and sedative. When 1.00 g reserpine is dissolved in 25.0 g camphor, the freezing-point depression is 2.63 °C (Kf for camphor is 40 °C·kg/mol). Calculate the molality of the solution and the molar mass of reserpine. "

The <em>freezing-point depression</em> is expressed by:

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We put the data given by the problem and <u>solve for m</u>:

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For the calculation of the molar mass:<em> Molality</em> is defined as moles of solute per kilogram of solvent:

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<em>Keep in mind that if the data in your problem is different, the results will be different. But the solving method remains the same.</em>

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