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At what energy does the Half Value Layer change from aluminum to copper?
Wiki User
∙ 13y ago
The HVL doesn't change.
The thickness of Al or Cu used to determine HVL will change as energy changes. At any energy you are able to state HVL in terms of Cu or Al.
Wiki User
∙ 13y ago
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Does aluminum or copper produce more electricity?
Copper is more electrically conductive than aluminum (this is because aluminum forms a monomolecular layer of non-conductive aluminum oxide on its surface).
What are the best and cheapest metals for a Faraday cage?
Silver is the best (but very expensive), then copper (still pretty expensive) and then aluminum. Heavy duty foil can be used if you double or triple layer it. I have heard you can purchase copper foil, but I don't know where or how much it costs.
How do photovoltaic cell systems work?
In photo voltaic cells there copper plate and on this plate there is a layer of cupprous oxide layer. On this cuprous oxide layer again there is a thin layer of silver.When light having the threshold frequency is incident on the silver layer it is focussed on the cuprous oxide layer and the electrons on this layer are ejected out and pushed on to the copper plate.Here the copper plate acts as an anode and hence the flow of electrons takes place which constitutes the electric current. The flow of electric current can be observed by coonecting a galvanometer in the circuit attached from silver layer to copper plate. The use of silver layer is that it will stop the ejection of electrons out from it. And this is the photo cell used most widely.It costs 28-30 Rs
What does the producer layer always have in the energy pyramid?
food
In which layer of the sun is energy transferred between?
The convection zone.
Does aluminum or copper produce more electricity?
Copper is more electrically conductive than aluminum (this is because aluminum forms a monomolecular layer of non-conductive aluminum oxide on its surface).
What scientific conclusion can be made about combining Copper Chloride and Aluminum Foil?
The two are highly reactive when mixed in water. If you add aluminum to a water solution of copper chloride, the aluminum will be combined as aluminum chloride gas, releasing the copper into the water. The mixture will turn very hot, bubble up, and start to smoke, and the color will change from blue to dark red. ========================= The first sentence is correct, the two are highly reactive, but from there on, there are problems... There's no such thing as aluminum chloride gas. There is a gas given off, but it is hydrogen gas. The "smoke" is actually tiny droplets of water condensed from water vapor. It gets that hot. The red color is due to the formation of copper metal a Cu2+ ions are reduced to the metal as aluminum metal is oxidized. Aluminum metal has a thin coating of aluminum oxide, Al2O3, covering the surface. Even freshly scraped aluminum metal will quickly reform the passivating layer of aluminum oxide. So in many solutions, the layer of Al2O3 prevents any aluminum metal from reacting. If aluminum metal is placed in a solution of copper(II) sulfate, you will not get a reaction. No copper metal will form on the aluminum. But when placed in copper(II) chloride, aluminum will give a vigorous reaction with a lot of heat and hydrogen gas being given off. The reason is the chloride ion. In the presence of chloride ion, the Al2O3 layer dissolves forming the AlCl4^- in solution and exposing a fresh layer of aluminum metal. The aluminum metal will reduce copper(II) ions to copper metal, AND the aluminum metal will react with water very much like an alkali metal reacts with water, vigorously, with a lot of heat given off, and with the formation of hydrogen gas. Al2O3 + 8Cl- + 3H2O --> 2AlCl4^- + 6OH- Al(s) + OH- + 2H2O --> Al(OH)3(s) + H2(g) 2Al(s) + 3Cu2+ --> 2Al3+ + 3Cu(s)
What is the name of the protective layer of aluminum?
Aluminum oxide. The oxide forms almost instantaneously in the presence of air or water or any environment that contains oxygen.
Can you use an aluminium wire instead of copper for a simple electrical circuit?
Yes, you can use an aluminum wire. Aluminum does conduct electricity. However, there is a well-known problem with aluminum wire. When exposed to air, the outer layer of aluminum forms a non-conductive oxide. There is resistance to the flow of electricity as it attempts to get through the aluminum oxide coating to the conductive aluminum below. When aluminum wire is used to reduce weight, it is usually welded to another metal that makes a better contact, such as copper. The contact metal is then what is connected.
What rusts faster aluminium or carbon steel?
Since aluminum cannot rust ('rust' is a specific term for the corrosion of iron), carbon steel will be faster. Althpough an oxide coat forms on both aluminum and steel, the oxides are of a different nature. The iron "rust" is a pervious coating which allows water to be held against the metal and oxygen to enter and react with the wet metal, aluminum oxide is an impervious layer which protects the metal from further decomposition,
What layer of the earth has the most aluminum?
Virtually all of earths aluminum ore is in the top layer of the earth, the crust.
How many peripheral layers does aluminum have?
Metallic aluminum has just one peripheral layer of aluminum oxide.
What does copper foil look like after heating?
It forms a layer of black copper oxide on the surface. It also gains weight because it combines with oxygen from he air. This is a permanent change.
What are the best and cheapest metals for a Faraday cage?
Silver is the best (but very expensive), then copper (still pretty expensive) and then aluminum. Heavy duty foil can be used if you double or triple layer it. I have heard you can purchase copper foil, but I don't know where or how much it costs.
What metal can be burned?
Many. Especially if in powder form and humidity + air present. Examples: Nickel, copper, zinc - easily Aluminum, magnesium have passivating layer, but with strong heating they will burn violently
Does copper and steam react?
No copper kettles are coated with special chemicals which prevents steam reacting with it just like aluminum forms an oxide layer which prevents it from further reacting. If no layer were put on the kettle it would turn greenish because copper would have reacted................. Hope I was useful ;-) Kyle.
Is corrosion of aluminium metal a physical process?
No, corrosion of aluminum metal is a chemical process. It occurs when aluminum reacts with oxygen in the presence of moisture, forming a layer of aluminum oxide on the surface. This chemical reaction leads to the degradation of the metal over time.
