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Why can't aluminium be extracted the same way as iron?
Aluminium is more reactive than iron, making it harder to extract using traditional methods like reduction with carbon. Instead, aluminium is extracted through electrolysis of alumina, a process that requires high temperatures and produces pure aluminium.
Order of expansion rate aluminium copper brass and iron?
Linear thermal expansion (α): Iron - 11,8.10-6/°C Aluminium - 23,1.10-6/°C Copper - 17.10-6/°C Brass - 19.10-6/°C See the link below for a more complete table.
Which is more expensive white gold or platinum?
Generally speaking, platinum is the more expensive metal weight for weight. However, the metal markets are very volatile at the moment and prices of both metals fluctuate with the differential varying accordingly. That being said, since platinum is significantly denser (weighs more for the same volume), platinum jewelry will always be more expensive then gold jewelry if all else is the same i.e. same size, design, etc.
Why is pure aluminium oxide mixed with cryolite before electrolysis?
Pure aluminium oxide is mixed with cryolite in electrolysis of aluminium because cryolite lowers the melting point of the mixture, making the process more energy-efficient. This allows the aluminium oxide to dissolve in the molten cryolite and conduct electricity more easily, leading to the extraction of aluminium metal from the ore.
Which is the most reactive titanium aluminum or platinum?
Titanium is the most reactive of the three metals you mentioned (titanium, aluminum, platinum). It readily forms compounds with oxygen in the air. Aluminum is also reactive, but it forms a protective oxide layer that prevents further reaction. Platinum is the least reactive of the three and is known for its resistance to corrosion.
Suggest why aluminium is more expensive than iron?
Aluminium is more expensive than iron because of its lower abundance in the Earth's crust. It is also more costly to extract and refine aluminium due to the energy-intensive process of electrolysis. Additionally, aluminium has a higher demand and is used in a wide range of industries which further contributes to its higher price.
What properties applies to aluminum and not iron?
Aluminium is paramagnetic, iron is ferromagnetic Aluminium has a low density, iron is more dense Aluminium is not corroded in water, iron is easily corroded The hardness of aluminium is lower The price of aluminium is greater The melting point of iron is significantly greater The thermal and electrical conductivity of aluminium are more important Iron has a greater chemical reactivity ................................................................... etc.
Why is iron cheaper than aluminium?
Enthalpy of combustion of aluminium is much more intensive than that of iron.
Which is stronger Aluminium corrugated sheets or galvanised iron corrugated sheets?
Aluminium corrugated sheets are generally stronger than galvanised iron corrugated sheets because of the inherent strength of aluminium as a metal compared to iron. Aluminium is also more resistant to corrosion, making it a more durable option for outdoor applications.
Which is more expensive gold or platinum?
platinum is more unique
Why platinum is more expensive than diamond?
Platinum is not more expensive than a beautiful, natural diamond.
Why do you need steel in concrete?
Since you're already using concrete, not much point in using the lighter, weaker, and more expensive aluminium. And lead is really weak, environmentally hazardous and more expensive than iron.
Would platinum or iron be more durable?
platinum
What is the disadvantage of aluminum?
Aluminium is more expensive than steel
How much more dense is platinum than aluminium?
The density of platinum is 21,45 g/cm3.The density of aluminium is 2,7 g/cm3.The ratio is 8.
What are the advantages or disadvantages of steel vs aluminium cars?
Aluminium has some advantages over steel. Since it has a lower density than iron or steel, a car body made from aluminium will be lighter than the same car body made from steel. This results in improved fuel economy. Also, aluminium does not corrode easily, so a car body made from aluminium will corrode less, and may last longer, than one made from steel. However, aluminium is more expensive than steel. So a car made from aluminium is likely to be more expensive than one made from steel.
Why is platinum more expensive then gold?
Platinum is a rarer element on the earth.
