Nanomaterials provide various applications that can benefit humans. Are there possible disadvantages on utilization of nanomaterials? If yes, provide examples.
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- What are 2 materials the US EPA says make sense economically and environmentally to recycle? O paper and plastic O paper and aluminum O plastic and glass Oglass and paint O all of these make sense economically and environmentally to recycle.State four advantages of using nanomaterials in wastewater treatmentA styrofoam cup was analyzed in a lab and found to contain 92% by mass carbon. How much carbon can be found in a stack of polystyrene cups with a total mass of 569 grams?
- 1. Name the most abundant elements in the crust from No.1 to No.10. (O, Si, Al, Fe, Ca, Na K, Mg, Ti, H). 2. According to the definition of minerals, point out which one is a mineral among the following ones (quartz, water, ice, coal, petroleum). 3. Indicate the differences between color and streak, using magnetite, hematite and limonite as examples. 4. State the difference between cleavage and fracture of minerals, using quartz and mica as examples. 5. List the 10 minerals in the Moh's hardness scale, from the softest one to the hardest one. 6. List the 5 classes of the crystal-chemical classification of minerals, giving a mineral example for each class. 7. State the classification of silicates according to the mineral's structures from island silicate to framework silicate. 8. Which one is a rock-forming mineral (calcite, diamond, coal, garnet)? 9. Understand the following terms and concepts: atom, nucleus, electron, isotope, element, crystal, mineral, ion, cation, anion, ionic bond,…What is the Benefits and drawbacks of Medicine and Drugs in the field of Nanotechnology?Disasters happened with the unsafe storage and handling of fireworks/firecracker products. Enumerate some of these products and give the gaseous products of the chemical reactions when they explode. Is the prohibition of its manufacture justifiable? Does the danger to life and properties outweigh the economic advantages of outlawing these products? Why?
- What is meant by the statement, “Perhaps no other single natural resource is as influential as soils.”? (Why is soil so important?) What are the 5 main functions of soil (list & describe each)How is Cu2O nanoparticle synthesized in the laboratory? Suggest a method and briefly describe it.In the presence of platinum, carbon monoxide reacts with oxygen to form carbon dioxide. The platinum is not used up by the reaction. What is the role of the platinum in the reaction? Include the class of platinum in this process. Use the paperclip button below to attach files. X D@ B IUに 2
- 2. Research on recent innovations or discoveries in the nanoengineering world. Discuss only the salient points of this innovation or discovery. What is its significance? What are your thoughts about it? Would you venture on nanomaterials as well based on this? Why or why not?You and your team work at a scientific research facility that is working towards creating the newest and best batteries for cell phones. Last week, you were told you have a new boss. Your new boss has a science background but he hears that beryllium (Be) is much cheaper than lithium. Your team does not think that switching to beryllium in batteries is a good idea. You have a meeting coming up with him. You plan to convince him that lithium is a better choice than beryllium for creating lightweight, and energy efficient batteries. Use your knowledge of periodic trends to create a slide with your team to present to him! Use the following concepts and terms in your argument: ionization energy, Does Li or Be have a greater ionization energy? Why does this matter? atomic mass Does Li or Be have a greater atomic mass? Why does this matter? Conclusion :Modern commercial airliners are largely made of aluminum, a light and strong metal. But the fact that aluminum is cheap enough that airplanes can be made out of it is a bit of historical luck. Before the discovery of the Hall-Héroult process in 1886, aluminum was as rare and expensive as gold. What would happen if airplanes had to be made of steel? The fuselage of the Boeing 777, which can carry 305 passengers, is approximately a hollow aluminum cylinder without ends, 64.0 m long, 6.2 m wide, and 2.5 mm thick (see sketch at right). The fuselage of an airplane Suppose this fuselage was made of steel (density 7.87 g/cm³) instead of aluminum (density 2.70 g/cm³), and let's say the average passenger has a mass of 81 kg. We'll also assume the engines can't lift any greater mass than they already do. Calculate the number of passengers that the Boeing 777 could carry if its fuselage was made of steel. X Ś