As the solvent moves up the paper, it carries along any substances dissolved in it, which are the pigments. The heavier the pigments the slower they move and they do not travel as far. Going in order from the heaviest to the lightest: Chlorophyll b, Chlorophyll a, Xanthophylls, and Carotene, which means that the lighter the pigment the better the substance is in dissolving in solvents. Photosynthesis
This explanation can be demonstrated in table 3 also because the results of the reactions demonstrates that chloride reacted more by the color of the product compared to the color of chloride in the mineral oil. Also it also demonstrates that iodine is the weakest oxidizing agent because the results show that iodide didn’t change much from the color that it showed in the mineral oil. In example 6 we have shown the activity series for the halogens used in this
Care must be taken when squeezing the pipet bulb on the filter pipet. Too much pressure might cause the filter to leak or fall off. Add about 2 mL of fresh tert-butyl methyl ether to the solid in the RB flask, warm briefly, let the solids settle for a minute, and pipet the liquid to the centrifuge tube as before. Again allow the solids to settle briefly in the centrifuge tube, then filter the liquid through the pressure filtration apparatus, into the same 25 mL Erlenmeyer flask. Doing a rinse such as this helps to ensure that any trimyristin that was left behind in the RB flask and centrifuge tube is not lost, thereby helping to ensure that
We added anhydrous Sodium Sulfate as a drying agent. To complete, we distilled the cyclohexene and collected the product. Knowing this data, we determined the yield % which is 58.5%. This experiment features the dehydration of cyclohexanol and produce cyclohexene. The acid catalyzed dehydration of cyclohexanol with distillative removal of the resulting cyclohexene from the reaction mixture
Therefore the two kinds of fatty acids compete for same enzyme complex; however, monounsaturated fatty acids are formed in greater concentration than VLCSFA. The reduction in the elongation of VLCSFA and a diet low in VLCSFA will slow the demyelination
A) is neutralized by water B) is surrounded by water molecules C) reacts and forms a covalent bond to water D) aggregates with other molecules or ions to form a micelle in water Answer: B Page Ref: Section 3 11 9) Which would you expect to be most soluble in water? A) I B) II C) III D) IV Answer: A Page Ref: Section 3 10) Solutes diffuse more slowly in cytoplasm than in water because of A) the higher viscosity of water. B) the higher heat of vaporization of water. C) the presence of many crowded molecules in the cytoplasm. D) the absence of charged molecules inside cells.
When you smell caraway oil, you will get a moist wood type smell. When you smell the spearmint oil, you should smell a really strong minty smell. Not only is it really minty, but it has a slight smell of alcohol. In the second part of this lab, you will be using an analytical gas chromatography. The analytical gas chromatography will tell you the retention times of the components in your substance.
Both flask’s pH went up 4. Which substance, water or the buffer does a better job of maintaining pH when small amounts of strong base are added? Water does a better job at maintaining pH under these circumstances, but only slightly 5. Write equations for the reactions taking place in each of the flasks. For an equilibrium arrow ( ) is an equals sign (=) (Unless you know how to do equilibrium arrows).
The aspirator was turned to medium high, and then the copper was poured onto wetted filter paper. Using distilled water to remove all copper from the beaker. Once completely on filter paper 6mL of acetone was added to the copper to help dry it out. The filter paper was then removed and set down to dry completely. Once dry the filter paper was weighed with the copper on it and subtracted from the original weight to see the amount of copper left after
Comparing the Solubility of Salt, Sugar, and Powdered Kool-Aid in Water Which substance is more soluble in water: salt, sugar, or Kool-Aid? If salt, sugar, and Kool-Aid are all added to the same amount of water until the mixture is saturated, then we predict that the Kool-Aid will be the most soluble, because it is designed to dissolve in water and the particles are more fine-grained. Manipulated Variables type of solute added (salt, sugar, Kool-Aid) Responding Variable how many teaspoons of solute it takes for water to become saturated Controlled Variables size of beaker volume of water size of teaspoon (5 ml) room temperature water temperature Materials 5 ml teaspoon stir stick beaker 200 ml of cold tap water granulated