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Dmitrij [34]
4 years ago
7

In a paper chromatography analysis, three pigments, A, B, and C, were dissolved in a solvent. A is slightly polar, B is highly p

olar, and C is moderately polar. List in order how these will appear on the surface of the chromatography strip starting from the applied spot at the origin line.
Chemistry
1 answer:
photoshop1234 [79]4 years ago
8 0

Answer:It would depend on the eluent solvent what we use ,If we would use a polar solvent than B will be appear first followed by c and then A on the chromatography strip.

If we use non-polar eluent solvent than A will be separated first followed by C and thenB on the chromatography strip.

Explanation:

Separation using paper chromatography is dependent upon the polarity of various  pigments .

A polar pigment would move ahead in case of polar solvent used and a non-polar pigment would move ahead when we use a non-polar solvent.

So separation would occur in order of polarity  of various pigments in a given solvent.

The amount of distance travelled by each component (or pigment or spot) can be calculated using the formula for retention factor:

Rf= Distance travelled by pigment spot or solute/Distance travelled by eluent solvent

Rf= Retention factor

Retention factor is basically the ratio of distance tarvelled by the pigment or spot to the ratio of distance travelled by the solvent.

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A sample of CH4 is confined in a water manometer. The temperature of the system is 30.0 °C and the atmospheric pressure is 98.70
kakasveta [241]

Explanation:

The given data is as follows.

  P_{atm} = 98.70 kPa = 98700 Pa,  

      T = 30^{o}C = (30 + 273) K = 303 K

      height (h) = 30 mm = 0.03 m (as 1 m = 100 mm)

Density = 13.534 g/mL = 13.534 g/mL \times \frac{10^{6}cm^{3}}{1 m^{3}} \times \frac{1 kg}{1000 g}

                = 13534 kg/m^{3}

The relation between pressure and atmospheric pressure is as follows.

             P = P_{atm} + \rho gh

Putting the given values into the above formula as follows.

            P = P_{atm} + \rho gh

               = 98700 Pa + 13534 \times 9.81 \times 0.03 m

               = 102683.05 Pa

               = 102.68 kPa

thus, we can conclude that the pressure of the given methane gas is 102.68 kPa.

8 0
3 years ago
Find the moler mass of P2S3
Anon25 [30]

Answer:

158.2 g/mol

Explanation:

8 0
3 years ago
How was or wasn't the scientific method followed in this experment
Andreas93 [3]

Answer:

The best answer would be:

C. The scientific method was followed because the experiment tested the hypothesis and produced reliable results.

Explanation:

The purpose of an experiment is to test the hypothesis. It is true that having an experimental group and a control group was following the scientific method but the data gathering and documentation was also part of the scientific method. So the best answer would be C.

Writing the question is not necessary. It is merely part of forming a hypothesis. The scientific method does not require many scientists to perform the experiment, but it does require that the experiment be repeatable, so it can be tested again.

3 0
4 years ago
Please help me with this question
vlada-n [284]
The answer to that question is B
7 0
3 years ago
A canoe displaces 100 L of water. Water weighs 9.8 N/L. What is the buoyant force on the canoe?
Setler79 [48]

Hey there!


The Buoyant force is going to be equal to the weight of the water displaced and it would be like this 100 L(9.8 N/L) = 980 N.



Hope this helped and mind marking me brainliest. Thank you!

5 0
3 years ago
Read 2 more answers
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