When we tested methanol, triphenylmethan did not dissolve at room temperature, but did dissove when the methanol was hot, and then recrystalized into a solid when the mehtanol was cooled, so this was a suitable solvent. When we tested toluene, triphenylmethan dissolved right away at room temperature and was therefore determined to be not suitable for recrystalization. Had we been required to find a solvent for trimyristin, we would have undergone the same tests with various potential solvents for it. Extraction is the transfer of a solute from one phase to another. Adding a solvent to a solid that only dissolves certain compounds in the
Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell, Color, Etc.) Beaker Observations 1 There was no smell 2 When I pour the oil in the water I noticed the oil started to bubble to the top. So I got to stir the oil that’s when there were smaller bubbles. As I smell the water there was no smell to the water. Putting the vinegar I didn’t smell anything but I did see the water was a change it was dark that’s when I added the vinegar 4 I added the detergent and it look like a cloud with bubbles.
The Effect of Alkaseltzer Tablets on the Boiling Point of Water Zackary Zambrano Chemistry Honors Mrs.Gregor Period-3 10/5/16 Introduction Statement of Purpose: The purpose of this experiment is to see whether or not alkaseltzer tablets have an effect on the boiling point of 100 mL of water. The control is just water, the variable groups are 100 mL of water with one tablet, and 100 mL of water with two tablets. “What exactly is boiling? The technical definition is what occurs when the vapor pressure of a liquid is greater than or equal to the atmospheric pressure.”(Lopez,k) Simply put water, boils when enough energy is released to cause bubbles and then turn to vapor. When water begins to boil, the water will continue to boil at
Hence, a calcium chloride and cotton were filled inside a drying tube. The condenser was wrapped with parafilm and a paper towel to avoid moistures from entering. The reagent will act as nucleophilic addition to acetone and work up with hydrochloride acid to synthesize 2-methylhexanol. Throughout this process, the solution turns dark grey and develop white precipitates. This step indicate that Grignard reagent was generated, and the extra white precipitates were magnesium.
When he cut it out, he sees the tetrafluoroethylene have polymerized and it as a waxy powder. This waxy powder is a nonstick substance known as Teflon. Teflon is a common name that Dupont used to call it. Teflon is very repel substance and they don't stick anything because the chemical structure of polytetrafluoroethylene have the fluorine atom and this atom does not want to sit near other element in the molecule . In addition, they have fluorine atom bond to carbon in the chain.
Because the muscle fiber was placed in glycerol before having added one of the three solutions, Ca+ is not required for muscle contraction. In any normal muscle fiber, the Calcium ion is required to bind to the tropomyosin to free the active site on the actin, however this muscle fiber was placed in glycerol and glycerol denatures troponin and tropomyosin so calcium is not needed for the contraction to take place. With ATP alone the muscle was able to contract. The K+ and Mg+ ions are both salts which help strengthen the bond between actin and myosin, resulting in a stronger
The disinfectant must not allow pathogenic bacteria to develop within the domestic plumbing after disinfection, causing water being decontaminated. Chemical disinfection of water the uses following disinfectants. Chlorine, Chlorine dioxide, Ozone, Hypochlorous, Phenols, Hydrogen peroxide and many others. While physical disinfection involves Ultraviolet, sun light, Digital radiation, High temperature etc. (1) Chlorination Chlorine is most commonly employed disinfectants for drinking water disinfection.
The effects of the ketone bodies on ammoniogenesis in spite of the urinary pH and bicarbonate falling is not in any way related to why there was a partial correction of the extracellular acidosis. The metabolic acidosis occurred from production of acid within the body. Metabolic acidosis can also occur when the kidneys are not removing enough acid from the body. When metabolic acidosis occurs, this will cause the pH level to be low which is likely due to increased production of hydrogen ions and the bodies inability to form bicarbonate within the kidneys. So that is why the ion exchange of the pH had an effect when it was infused.
However, the formula that was ascertained from the experimental data had been Mg5O6. It was anticipated that the experimental and theoretical empirical formulas would have been identical; since this was not the case, the hypothesis was nullified. There are various possible factors that might have induced this result. For instance, since there was not any equipment available in order to control the amount of oxygen that came into contact with the magnesium ribbon, their masses were not regulated into specific proportions. Also, even though human efforts were made to visibly observe the magnesium ribbon, it was extremely difficult to detect the exact time when the magnesium had been completely reduced to ash.
Leave the bottle standing, and the oil always separates from the water and rises to the top, because it’s lighter and will never form bonds with water (hydrophobic). The highly unsaturated fats on healthy cells are selectively permeable - meaning they can become water soluble to transport essential nutrients to the cells, or they can be hydrophobic, like the waxy leaf and water droplets on the next page. <<>> Water droplets are aggregates of hydrogen and oxygen atoms linked by hydrogen atoms (H2O), but the leaf’s waxy surface never bonds with the water, as the waxy (lipid) surface and water repel each other, like the hydrophobic components of cell
Then, the pipet was rinsed with distilled water. The bulbs were then attached to the pipette; filling and dispensing water were practiced using both bulbs. Furthermore, the 250-mL beaker was weighed, and its mass was recorded. After that, the Erlenmeyer flask was filled with 100 mL of distilled water. The temperature was recorded.
15. Add another 25cm3 of Methanol and Ethyl acetate to the solutions. Stir gently for 20 minutes using a stirring rod this is to allow more of the active ingredients to mix with the solution. 16. Take two funnels and place one in two separate clean measuring beakers making sure the bottoms of the funnels don’t touch the bottom of the measuring beakers.
Elodea” was put into a tank labelled “chemically treated Elodea”. Three drops of phenolphthalein were added to each beaker and then all of them were placed on a sheet of white paper. 0.02N NaOH was slowly added to the “tap water with Elodea” beaker with a dropper that delivers 0.025 mL per drop. Each drop was counted and the solution was stirred thoroughly before adding the next drop. This was continued till a faint pink color appeared in the solution.
In addition, when both elements were carried out, it was noticeable that each of the test tubes feels warm. This indicated the reaction is an exothermic reaction because it produced heat. The pH level for magnesium chloride solution was neutral (not basic because of oxide layer) but basic for calcium chloride. It can be seen that calcium is more reactive than magnesium. This was because the lower the elements are down a group, the larger the size of its atomic radii.