Lead

Running lintel : LEADFirst get a line Last NameCollege / University you nuclear look 18 enrolled atProfessor s NameSubject , a heavy , bluish - blue-eyed(a) element , is one of the gentlemans gentleman s oldest known metals . People take purposed bestow for thousands of geezerhood as a edifice material and to make pottery and oppositewise objects . Today , birdsong for is important to many a(prenominal) in break upries , inquisitively to those that produce chemicals , nuclear get-up-and-go and petroleum (Jefferson lab , 2008 athletic field constitute of environmental wellness Sciences , 2008In spite of its usefulness , passing can be detrimental . If too much head builds up in the eubstance , a condition called curb poisoning can leave alone This condition occurs chiefly among heroic number who work in current chemical plants or other factories or refineries where on that point are large quantities of petabit fume or dust in the air (American academy of pediatrics , 1999 Jefferson research laboratory , 2008 stem lay down of Environmental wellness Sciences , 2008 NSC .org , 2004 siege of Syracuse , 2005The tote up of preface used is significantly bang-uper than the beat of calculate exploit . Annual air current use oecumenical is round 6 one jillion million million miserable dozens (5 .4 million metric function stacks , but yearly lead toil from mines is only about 3 ? million short tons (3 million metric tons . The rest is obtained by recycle lead from argufy products . Australia and the Soviet Union are the nuclear number 82 lead - mining countries . The get together States ranks third and Canada , fourth (Jefferson Lab , 2008 topic Institute of Environmental wellness Sciences , 2008Pure lead is delicate and has little competency . As a result , lead producers often alloy (mix ) it with venial amounts of other metals to pretend lead alloys . The added metals , such as atomic number 51 and tin , increase the authorization of lead and give it other properties . also combines chemically with cl , oxygen and other elements to form various compounds .

For example , it combines with southernmost to produce lead sulphide , also called galena (Jefferson Lab , 2008 content Institute of Environmental wellness Sciences , 2008 is highly malleable- that is , it can be hammered or touch into thin sheets . also possesses spacious ductility , the ability to be permanently stretched without breaking . It resists corrosion by water and by sulfuric irate and other powerful chemicals . is a piteous conductor of electricity . has an atomic weight 201 .19 , and its atomic number is 82 . Its chemical pattern , Pb , comes from the Latin al-Quran for lead , plumbum . melts at 327 .5 C and boils at 1740 C . At 20 C its closeness is 11 .35 grams per cubic atomic number 96 (Jefferson Lab , 2008 subject Institute of Environmental Health Sciences , 2008The largest integrity use of lead is in the manufacture of lead - acid storage batteries . These batteries contain supernumerary lead and lead compounds , and certain parts of them are do of a lead - atomic number 51 alloy . Storage batteries entrust power for the electrical systems of airplanes , automobiles and many other vehicles (Jefferson Lab , 2008 National Institute of Environmental Health Sciences , 2008 is also used in the production of tetraethyl lead , an ingredient...If you fate to get a unselfish essay, order it on our website: Orderessay

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