paper chromatography lab

Hi! This is a set of three multiple choice questions. Hope you can answer them all. Thank u~

Why viscosity of fluid affect the capillarity height?

PAPER CROMATOGRAPHY • Define chromatography • Demonstrate an understanding of the process of chromatography • Describe the steps involved in a chromatography investigation Explanation Coloured inks are often made up of several different inks. Each colour of ink will get carried a different distance by the water, allowing you to see all of the different inks. Try this with different colours to see what actually goes into a colour. This technique is called chromatography and can be used in chemistry to find out what is in an unknown mixture. II. Materials .Felt tip pens (non-washable) . Kitchen roll .A bowl or cup . Water • Scissors III. Health and safety • Make sure that you thoroughly clean any equipment after the experiment before using for food IV. Procedure Method 1 1. Take a sheet of kitchen roll and draw a simple picture with a non-washable felt tip pen. 2. Place the sheet over an empty bowl. This is to keep the paper from getting too wet. 3. Carefully add a few drops of water…

Explain the difference between constant rate filtration and constant pressure difference filtration using mathematics and examples. When might either of these procedures be used in conjunction with filtration?

In which option is the order showing whether the questions given below are true or false? (  ) Airborne humectants are generally called hygroscopic substances. (  ) Removing water from solids can be done by heating your sample in the oven just below its melting point. (  ) Drying capacity is a measure of the drying efficiency of the dryer. (  ) Drying intensity is the amount of water held by 100 grams of dryer. (  ) For the phenomenon called "blooming" to occur, the vapor pressure of the hydrate system must be higher than the partial pressure of water in the air. A. Right, Wrong, Right, Wrong, RightB.Right, Right, Wrong, Wrong, RightC.Right, Wrong, Wrong, Wrong, RightD. Right, Wrong, Wrong, Right, RightE.Right, Right, Wrong, Wrong, Right

Which technique is based on the stronger attractionsome components have for the stationary phasecompared to the mobile phase? A. filtration              D. chromatographyB. distillation           E. sublimationC. crystallization

The following data apply to a 1g sample of a granular powder Volume of the solid alone = 1 cm3/2g Volume of intraparticle pores = 0.2 cm3/1g Volume of spaces between particles = 3.2 cm3/2g Volume after tapping = 1.4 cm3/1g   What is the bulk volume?

Can paper chromatography be used to separate and identify very volatile substances? Why? Please explain comprehensively.

1. In thin layer chromatography (TLC), explain how the pigments separate on a piece of paper. 2. If the spots are colorless on a TLC plate, how can you make it visible? Enumerate 2 ways and discuss each.

To prepare 5 ml of an eyedrop solution to 10 cps by mixing glycine and water,,................ml of glycerin is needed.(pure glycerin viscosity 500 cps, water viscosity 1cps).

Filtration of samples A, B, and C show no residue left. After letting them dry in different beakers, SAmple A remains no residues. Sample B shows crystal leftovers, and sample C show brown film on the beaker walls. This means that: a. Two or more samples are heterogenous b. Two or more samples are homogenous c. all sample have 2 or more phases d. all samples are pure

You are given three unknown samples stored in screw-cappedcontainers and was told to analyse them. You noted that Container A iscloudy and have some particles that are staying near the bottom of thecontainer. Container B is translucent while Container C is transparent. If thecontents of Container A can be separated by simple decantation,what isthe particle size that BEST describes its composition?i. <1 nmii. 1 nmiii. 1 nm-100 nmiv. >1000 nm

Which of the following can be used as mobile phase in chromatography? A) Нехаne B) Sand C) Acetyl Ferrocene D) Alumina OB OD Ferrocene and acetyl ferrocene can be separated by column chromatography. - Which physical property is underlying concept for this separation process? A) Boiling point B) Melting point C) Relative polarity D) Refractive index O A ов D.

Chromatography involves the separation of two or more compounds/ions caused by their molecular interactions with two phases. True False

What is the standard value/limit/range of viscosity used as a reference when determining the viscosity of syrup? (Based on United States Pharmacopoeia and British Pharmacopoeia)

Can paper chromatography be used to separate and identify very volatile substances? How do I prove this.

need all parts in detail don't copy or else I will downvote need explanation y other options are incorrect

What do you mean by Critical Micelle Concentration (CMC)?

1. A 25-mL specific gravity bottle was found to weigh 46.05 g when filled with water, and 52.93 g when filled with the ophthalmic solution. If the empty specific gravity bottle weighs 21.04 g, what is the specific gravity of the ophthalmic solution?   a 0.784   b 0.870   c 1.149   d 1.275

vo/index.html?deploymentld=55750828934189288909969212&elSBN=9781305657571&snapshotld%3D2199898&id31... O Tp * NDTAP Q Search this Use the References to access important values if needed for this question. Trisilane (SiąHg) is a liquid with a density of 0.739 g cm³. It reacts with oxygen to give silicon dioxide (SiO2) and water. Calculate the mass of silicon dioxide that would form if 21.3 cm³ of trisilane reacted completely with excess oxygen. g silicon dioxide * Submit Answer 5 question attempts remaining

Why in microstructure visualization etchants are used? Explain

i need help solving this step by step with all the calculations  Below is a set of absorbance data that you have obtained while doing an experiment studying the diffusion of potassium permanganate into solutions of water. This diffusion experiment was conducted at three temperatures. I need help to Calculate the diffusion rates for each of these temperature conditions.  Time (min) 4°C 22°C 37°C 0 0.024 0.108 0.081 5 0.048 0.144 0.221 10 0.069 0.196 0.321 15 0.088 0.224 0.424 20 0.086 0.234 0.580 25 0.089 0.248 0.683 Once you calculate your diffusion rates  in standard notation and use 3 digits past the decimal point   (Note that the last zero is considered to be a digit)    Diffusion Rate 4°C =  __________________  Diffusion Rate 22°C = _________________  Diffusion Rate 37°C = _________________     To show how you calculated the diffusion rates for these temperature - What absorbance values did you choose to…

Why is it better to use 10.0mL or greater of a liquid in measuring its density?

In reference to surface chemistry, define dialysis.

why is a fractionating column better able to separate liquids?

Is 10 ppm 400% less than 50 ppm?

Hint: You won't be able to tell exactly when the substance melts. You don't need to have exact measurements, just try to get an approximate value. Row Name melting temp °C variable 1 CuCI 2 Sucrose KI ... 4. lodine ... ...

Use a chemical dictionary, chemical text or encyclopedia to find a specific definition of "chromatography." List a few mobile and stationary phases.