what are uses of zinc oxide and zinc metal?
140349
Zinc oxide is used in cremes for acne and burns, and other skin issues.
751234
An acid dip will do it. The problem being that the acid will eat the zinc too.  SO, use a dilute acid, such as muriatic. Which is dilute hydrochloric acid.  Nitric, and phosphoric acid would also work. Make sure you don't use a concentrated acid, as it is not needed, and can be quite dangerous.  There is a good chance that a commercial AC coil cleaning solution (inhibited dilute phosphoric I believe) would do the job.  Once the copper is removed, make sure to use tongs to remove the penny, and then rinse it well to stop the action of the acid.
756093
In a single replacement reaction, the more active metal will replace the less active one.  Such as:\n\nCuSO4 (aq) + Zn (s) ----> ZnSO4 + Cu (s)\n\nTo the best of my knowledge,  Platinum will not replace Zinc in a sulfate solution:\n\nZnSO4 (aq) + Pt (s) ----> ZnSO4 (aq) + Pt (s) [No Reaction]\n\nPlatinum is often used as an electrode because it is difficult to replace by direct single replacement reactions.
641267
One use is superconductor research.\n\nhttp://www.iitap.iastate.edu/htcu/backissues/95APR01EM.TXT.html
757083
Look at USES\n\nhttp://en.wikipedia.org/wiki/Sulfur_dioxide
863889
Copper is used as a conductor and as a easily maliable (formable) metal.  It is also naturally anti-bacterial.
421397
Zinc and Hydrochloric Acid
943583
Magnesium is used in sparklers\nCalcium is use as calcuim carbonate (limestone)
507708
There is info about zinc and what foods it is present in here:\n\nhttp://www.vegsoc.org/info/zinc.html
372962
zinc metal cells form a mettalic lattice wherein the atoms form mettalic bonds - which are not as strong as chemical bonds - from oxidation
643576
There are zinc mines throughout the world, with the largest producers being Australia, Canada, China, Peru and the U.S.A. Mines in Europe include Vieille Montagne in Belgium, Tara, Galmoy and Lisheen in Ireland, and Zinkgruvan in Sweden. Zinc metal is produced using extractive metallurgy. Zinc sulfide (sphalerite) minerals are concentrated using the froth flotation method and then usually roasted using pyrometallurgy to oxidise the zinc sulfide to zinc oxide. The zinc oxide is leached in sulfuric acid and the resulting solution is purified using zinc dust. The metal is then extracted by electrowinning as cathodic deposits. Zinc cathodes can be directly cast or alloyed with aluminium.\n\nAnother process to produce zinc is flash smelting, a pyrometallurgical process. Then zinc oxide is obtained, usually producing zinc of lesser quality than the hydrometallurgical process. Zinc oxide treatment has much fewer applications, but high grade deposits have been successful in producing zinc from zinc oxides and zinc carbonates using hydrometallurgy.
195781
None. "A more active metal will displace a less active metal from a solution of its salt." Copper and lead are both less active than zinc. Obviously, zinc won't displace itself from zinc sulfate.
623319
Copper is a tricky one, as there appears to be true demand from China and not that many new ways of digging up significantly more ore.  It might be that people who rely on copper decide to find ways to get around using copper.  Maybe aluminum cable instead?\n\nIn the case of zinc, there is a special price level maybe 10% or so above where it is now, where it is worth melting US pennies (which are 97.5% zinc).  At this price the zinc and copper in pennies becomes worth more than one cent per penny, plus the energy needed to melt it down.  There will then be a huge amount of illegal melting of pennies and demand will be satisfied for awhile.\n\nIn summary I think copper might be higher, but there is a lot of uncertainty due to the various things that could happen, such as a decrease in copper demand.  And zinc price could be limited by penny melting.  I wouldn't invest much in this area personally.
748872
Cu2+ (aq)  +  Zn (s) -->  Cu (s) + Zn2+ (aq)
213711
Obviously, an unreactive metal. Well, you can galvanise the zinc, or you can paint it (I'm serious).
913568
Zn(NO2)2; Co(HSO3)3; HgF; Al2(CO3)3; Cs2C2O4; Ba(ClO)2; SnBr2; Mg(HSO3)2.
206168
zinc oxide...like in desitin ointment...clears it up