Copper sulphate is used in the control of algae. Whether dacaying pennies is enough to control the growth on an unknown volume of pond or birdbath is uncertain. Why don't you get two birdbaths, put pennies in one and nothing in the other and see if it works? But, be careful with your results. The birds may like the one with the shiny coins better and poop in it more, because it is more popular and cause it to grow more phytoplankton. note: Only pennies made before 1982 are 95% copper. Newer ones are 97.5% zinc and 2.5% copper. Use a piece of copper pipe instead. Copper works as a preventative algecide mostly when the copper is in a dissolved state and floating freely in the water. This is why copper sulfate works well because it dissolves whereas pennies will not (unless the water is acidic). I would expect the pennies would leave a relatively cleaner spot where they lie. I would just buy a small bucket of 3" chlorine tablets and let one slowly dissolve at a time, won't kill wildlife because of the relatively small concentration of chlorine released over time, unless you place them in a spot where water RUSHES by the tablet.
Pennies are made, or at least coated, with Copper and that copper can oxidize and turn green. Newer pennies have an alloy metal that is supposed to reduce this chemical action.
how to reduce copper losses in a transformer Copper losses are due to the resistance of the copper (or aluminum) windings. To reduce copper losses the transformer would have to be rewound with heavier gage wire.
making the copper wire thicker
NO, cleaning them will probably reduce their value
This was during WW2. Copper was needed to make ammunition for the war effort. The Mint struck cents out of steel coated with zinc to reduce corrosion, and the copper saved was diverted to the military. Unfortunately the zinc coating was unsatisfactory and the coins began to corrode. By 1944 enough copper from used shell casings was available to resume minting cents out of copper (bronze, actually).
The silver piece of zinc dissolves forming zinc ions. Copper(ii) reduce into copper(i) ions. The blue color of the solution decreases.
Using larger amounts of copper will decrease copper loss (use bigger wire than necessary).
Then you just go by your own given name.
because carbon is higher up in the reactivity series than copper, so it can displace it from its oxide and form the pure metal.
to reduce the copper losses
Buildings can be placed on giant springs that can move slightly with the earth below them, they do not eliminate the danger of an earthquake, but they reduce it.
I would either try pouring just enough vinegar to cover the pennies in a glass, place the pennies in the glass of vinegar, and then place the glass in hot but not boiling water or try rubbing the pennies with steel wool pads. Best of luck!BUTTTTTT..........If the coin is in any way a collectible and not just something from your pocket change, DON'T TRY TO CLEAN IT. Any chemicals you have at home will damage the metal and reduce or even destroy its value to a collector.
If they are being cleaned or saved for numismatics purposes, cleaning in any fashion will greatly reduce their value.
Sugar donates electrons that reduce blue copper (II) sulfate to orange copper (I) oxide.
To reduce interference by the earths atmosphere
To reduce the amount of pollution in the air.
Placing the telescopes in valleys is believed by some people to slightly reduce radio interference, but when radio telescopes are placed in valleys, it is usually because they are so large and the mountains work as supports, to reduce the cost.
No reaction, because iron is a more active metal than copper. This means that copper cannot reduce iron from its salt.
Let me reduce that to an equation for you: 10x + 80(1-x) = 30; solve for x.
The higher concentration of Iron in Steel the better quality Steel there is. Any Copper would reduce the quality of Steel