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What else can I help you with?
Why is copper mined?
So it can be used.
Why did the composition in pennies change between 1981 and 1982?
because in 1982 there was a war going on and copper was short and they needed copper for their weapons so they stoped using copper for the so called "penny" and used zinc instead but they still used a copper collered coating. :) hope this helped because in 1982 there was a war going on and copper was short and they needed copper for their weapons so they stoped using copper for the so called "penny" and used zinc instead but they still used a copper collered coating. :) hope this helped
Why are many natural resources exhaustible?
If there is only so much of something, it can be used up. You might have a very large quantity of something, but then, the human race collectively has a very large appetite. Every copper mine has only so much copper, and every oil well has only so much oil, etc.
Why copper wires are used in households wiring?
Copper wire is fairly inexpensive, and has a good conductivity. Aluminum wire is cheaper and lighter, but it is not as good a conductor as copper, plus it expands and contracts so much that it can loosen screw terminals causing fire hazards. <><><> Copper is the second best common conductor (silver is the best), it is flexible, easy to work with (as wire), easily mined, and most important, it is cheap (at least compared to silver). It is pretty much perfect for most kinds of electrical wiring. (For homes, cars, machinery, etc.) <><><> Copper is a very good conductor of electricity and is much cheaper than gold or silver which are better electrical conductors. That is, they can carry a higher electrical current without overheating. Copper is ductile and malleable making it easy to draw into very fine wires. It can be endlessly recycled with little loss due to oxidation.
How much is pure gold in carats?
24k gold is pure gold but is too soft to be used for much. So it is usually alloyed with copper and silver to make it harder.
How much is a copper 999 bullion worth?
The value is determined by weight. Copper is currently about $3.75/pound, so weigh your copper and do the math.
How much copper is used to make a US nickel?
The surprising answer is that in spite of its name a US nickel is actually mostly copper - 75% to be exact. The coins weigh 5.00 gm so that means they contain 3.75 gm of copper and 1.25 gm of nickel.
How much energy is saved when Copper is recycled instead of mined?
Recycling copper saves fifteen percent of the energy used in producing the same amount from copper ore. Recycled copper has exactly the same qualities as copper from ore, so it can be recycled over and over without any loss. Copper is non renewable, so it is important to conserve it. Energy saved means fewer greenhouse gas emissions from the fossil fuel saved.
Is aluminium used for water pipes and electrical wires?
Aluminium is not used for water pipes. It's not as elastic as Copper. Because aluminium is less expensive than copper, it is sometimes used for electrical wiring, but, because it corrodes much more easily than copper, much more care has to be taken a) to protect it from the atmosphere and b) to make connections that will be remain reliable over a long period of time. Overall, aluminium wire is not as easy to install so, for general purposes, copper wire is better.
Why is the need to use so much copper cause a problem in the future?
y
Cu forms two oxides For the same amount of Cu twice as much oxygen was used to form the 1st oxide than to form the 2nd one What is the ratio of the valencies of copper in the first and second oxides?
The ratio of the valencies of copper in the first and second oxides is 2:1. This is because for the first oxide, twice as much oxygen was used compared to the second oxide, so the valency of copper in the first oxide will be 2 while the valency in the second oxide will be 1.
Why will using so much copper be a problem in the future?
Using excessive amounts of copper can lead to environmental issues such as water contamination and habitat destruction due to mining activities. Additionally, copper is a finite resource, so if consumption continues at a high rate, it may eventually become scarce and expensive to obtain. Lastly, copper production and usage contribute to greenhouse gas emissions, exacerbating climate change.
