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FAQ

1. Why does aluminium resist corrosion?2. How do we make aluminium stronger?3. Why does titanium resist corrosion?4. What properties make titanium ideal to use in jet engines and nuclear reactors?5. Why do we need electricity to make aluminium and titanium?6. Why does recycling aluminium save electricity?Even if you only know the answer to one question the help will be much appreciated :D

1. When exposed to air, pure aluminium rapidly forms a passive oxide layer, alumina, which further inhibits aluminium reactions with other elements. 2. Aluminium can be made stronger by alloying with other elements. One of the most known aluminum alloy is duraluminium, where the principal alloying component is copper. 3. Exactly as aluminium, titanium corrosion resistance is due to its high reactivity with oxygen. When pure titanium is exposed to air it forms a passive titanium dioxide layer on the surfaces exposed which further prohibits other reactions with corrosion agents. 4. The use of titanium in jet engines components is favored by its strength to weight ration, which is unmatched by any other metal. As for the nuclear reactors, its use is preferred because of its superior corrosion resistance associated with fracture toughness and overall durability. 5. Both titanium and aluminium are refined from their respective mined ores - bauxite, for aluminium, ilmenite and rutile for titanium. Basically, these are oxides of the metals. Pure metal has to be reduced from these ores and processes involve use of temperatures up to and sometime exceeding 1000 degrees Celsius, which obviously requires a great consumption of energy, including electricity. Moreover, pure aluminium is obtained in the final processing phase through electrolysis, meaning an electrical current is needed in order to drive the required chemical reactions, thus adding to the electrical consumption. 6. Recycling aluminium from aluminium simply requires the remelting of the metal, eliminating the electrolytic phase that is high electric energy consuming.

Yes, aluminum sheet can be used for aerospace structural components. Aluminum is a commonly used material in the aerospace industry due to its desirable properties such as high strength-to-weight ratio, corrosion resistance, and good formability. The use of aluminum sheet for structural components allows for the construction of lightweight aircraft, which is crucial for fuel efficiency and performance. Additionally, aluminum is readily available and cost-effective, making it a popular choice for aerospace applications. However, it is important to note that the specific grade and thickness of the aluminum sheet used will depend on the particular requirements and specifications of the aerospace structural component.

Yes, aluminum sheets can be used for solar panel applications. Aluminum is a lightweight and durable material that is commonly used for the frames and backings of solar panels. It offers good corrosion resistance and can efficiently dissipate heat, making it suitable for solar panel installations.

What is the final concentration of aluminum cation?

You have to be able to determine the number of moles of Al+3 that each solution contributes to the final solution: 1. aluminum chloride: AlCl3 Multiply the volume (in L) by the molarity to determine the number of moles of each compound dissolved in solution. 0.0431 L x 0.279 M = 0.0120 mol AlCl3 in solution When the AlCl3 in placed in the water, it dissociates to form the following ions: AlCl3 -- Al+3 + 3Cl- So for every one mole of AlCl3 placed in the water, one mole of aluminum ions will dissociate. Therefore, since we have 0.0120 mole of AlCl3 in the solution, that means that the aluminum chloride will contribute 0.0120 Al+3 ions to the final solution. 2. Aluminum sulfate: Al2(SO4)3 Multiply the volume (in L) by the molarity to determine the number of moles of each compound dissolved in solution. 0.0146 L x 0.464 M = 0.00677 mol Al2(SO4)3 in solution When the Al2(SO4)3 in placed in the water, it dissociates to form the following ions: Al2(SO4)3 -- 2Al+3 + 3(SO4)-2 So for every one mole of Al2(SO4)3 placed in the water, two mole of aluminum ions will dissociate. Use the mole ratios of the dissociation reaction to determine the number of moles of Al+3 ions that the aluminum sulfate contributes to the solution. 0.00677 mol Al2(SO4)3 x (2 mol Al+3 ions / 1 mol Al2(SO4)3) = 0.01354 mol Al+3 ions Therefore, the total number of Al+3 ions in solution is the sum: 0.01354 + 0.0120 = 0.02554 mol Al+3 ions The last piece of information needed to determine the concentration of the final solution is the volume of the final solution. Since the two volumes were mixed, the volume of the final solution will be the sum of the two solutions. 0.0431 L + 0.0146 L = 0.0577 L Therefore, to calculate molarity: Molarity = moles of solute / liters of solution Molarity = 0.02554 mol / 0.0577 L = 0.443 M Al+3

The reflectivity of 101 aluminum sheets is typically high, as aluminum is known for its excellent reflective properties.

Yes, aluminum sheets are suitable for aerospace engine components. Aluminum is a lightweight and durable material that offers excellent corrosion resistance and high strength-to-weight ratio, making it ideal for various aerospace applications. Additionally, aluminum's thermal conductivity properties are beneficial for engine components as they help dissipate heat effectively.

Yes, aluminum sheets can be used for decorative wall panels. Aluminum is a versatile material that offers a wide range of design options for wall panels. It is lightweight, durable, and resistant to corrosion, making it suitable for both interior and exterior applications. Aluminum sheets can be easily cut, formed, and fabricated into various shapes, patterns, and finishes, allowing for endless design possibilities. Additionally, aluminum can be powder-coated or anodized to enhance its appearance and provide additional protection against wear and tear. Whether it's for residential or commercial spaces, aluminum sheets can add a modern and stylish touch to any wall, making them a popular choice for decorative wall panels.

The which temperature the aluminum evaporates in vacuum?

Aluminum boils at 2519 °C (4566 °F) at normal pressure. In a vacuum, it might boil (a little) at 808 °C, but actually this is better known as subliming.