Roughly ________% of all iron and steel produced each year is used to replace corroded items.
A) 4
B) 20
C) 50
D) 75
Correct Answer:
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Q47: The black tarnish on silver is
A)AgOH.
B)Ag₂O.
C)AgCl.
D)Ag₂S.
Q48: Most chemical explosions are _ reactions.
A)nuclear fission
B)oxidation-reduction
C)neutralization
D)condensation
Q49: When silver tarnishes,
A)Ag atoms are oxidized to
Q50: A battery in which a fuel is
Q51: A mixture of ammonium nitrate (NH₄NO₃)and fuel
Q53: When your car rusts,the major chemical reaction
Q54: ANFO is an explosive mixture of ammonium
Q55: With respect to volume,approximately what percentage of
Q56: The removal of silver tarnish from silverware
Q57: _ is used as an explosive and
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