Results: Zinc Metal - Iodine - Iodide + Triodide + Zinc Ion + Focus Questions: 1. Is there a way to put energy into Zinc Iodide in order to regain the elements, zinc and iodine? If there is a way, how does it happen? Yes, this can be done through electrolysis using a battery and exposed wire tips. Take sample of Zinc Iodide and dissolve in solution.
Lesson written by Carolina Sylvestri Experiment: Reaction Between Ions in Aqueous Solutions The Monster Mash Background: Ionic solids dissolve in water to form aqueous solutions which conduct electricity. These solutions contain both positive and negative ions in such numbers that their net electric charge is zero. In this experiment, you will mix various ionic solutions, two at a time, to determine which combinations form precipitates. Knowing which ions are present makes it possible to deduce which of the possible ion combinations are responsible for the precipitates. From your data table, it will then be possible to generate a solubility table.
The reaction that occurred with this step was displacement and metathesis in the form of gas formation. The balanced equation of this step looks as follows: CuSO4aq+Zns→Cus+ZnSO4(aq) Once this step was finished, the remaining copper was retrieved. First, to recover the copper HCl was added to remove all the zinc. When this happened, a yellow tint was observed in the liquid, as well as bubbling as the zinc was broken down. Once the copper dried out, it was weighed and came to a total of 240 mg.
| Centrifuge: used to isolate the solid from the solution | . Focus Questions: When acidified water is not used in the zinc and iodine synthesis, zinc hydroxide is formed. How can it be identified based on the amphoteric nature. When zinc and iodine react without the presence of acetic acid in the water, zinc hydroxide forms. This is evident because the substance tested positive for both the acid test and the base test for zinc hydroxide.
2) Why isn't MWX selling? (.5 - .75pg) Kathon MWX is not selling because, either customers aren’t aware of the product or customers do not see a need for biocides. MWX is a "maintenance" biocide, meaning it would not work with the initial concentrate, thus it was not going to sell as part of that market. When customers are making initial purchases for their metalworking business they may forget to buy products for extending the life of their fluids. If customers are visiting their local industrial "supermarket" these facilities do not display MWX prominently and the 14 person sales force dedicated to this product are unable to educate large numbers of sales reps and end-users on the benefits of MWX.
In leaves, photosynthesis involves the photolysis of water, a process that involves the attachment of two electrons to a magnesium ion in chlorophyll and the production of hydrogen ions from the breakdown of water. Together with the electrons, the hydrogen ions are used to reduce NADP in the light-dependent reaction in the thylakoid. The hydrogen
This causes it to reproduce blue colonies of bacteria. 5. We did not add plasmid to the control plate because it did not have any bacteria on it to cause a reaction. 6. We put the bacteria through a heat shock because that is how hot it would be in a human body, therefore, making it a natural
The purpose of the experiment was to do a solution, which molarity is 0.20 mol/l, from water and an ionic compound. Our ionic compound was zinc sulfate (ZnSO4). Our task was to make one hundred milliliters (100 ml) of the solution. Materials To execute the experiment we used the following equipment: - a beaker - a volumetric flask - a plastic spoon - a scale - a pipette - a funnel - a cork cap We also used solid zinc sulfate (ZnSO4), and distilled and deionized water to make the solution. Calculations To figure out the amount of zinc sulfate that we had to add to the water, so that the molarity of the solution would be 0.20 g/mol, we did the following steps: First we calculated the amount of the zinc sulfate to add in moles.
The chemicals involved in creating the metals and internal parts of the automobile also do not differ between electric and traditional automobiles. Taking into account the fact that there have been numerous instances where chemicals would leak out of the factory and into the ground outside, electric cars are starting to lose their eco-friendliness. If electric vehicles really are environmentally friendly, their production process should be also. Additionally, electric automobiles require a new kind of battery that has yet to have its lifespan measured. Although lithium-ion batteries have been used for years now, the scaled-up versions in electric cars have yet to be properly tested and examined (Newman).
This may have entered the detector during the experiment, skewing the data. This is an experiment that needs to be performed in total darkness, but it was not possible due to the blinds not blocking out all of the sunlight and the computers being on throughout the experiment. A final cause of error may have been the yellow and green filters2. They have been inadequate, insufficiently blocking high frequency light. These unwelcome high energy photons would have ejected high energy electrons, allowing them to surpass the cathode-anode potential, which would have increased the measured stopping