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Concentrated HNO3 can be transported in alluminium container.

Graphite is used as lubricant.

Al wire is used to make transmision cables.

  Concentrated HNO3 can be stored and transported in aluminium containers as it reacts with aluminium to form a thin protective oxide layer on the aluminium surface. This oxide layer renders aluminium passive.

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  Graphite has a layered structure and different layers of graphite are bonded to each other by weak van der Waals’ forces. These layers can slide over each other. Graphite is soft and slippery. Therefore, graphite can be used as a lubricant

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  Silver, copper, and aluminium are among the best conductors of electricity. Silver is an expensive metal and silver wires are very expensive. Copper is quite expensive and is also very heavy. Aluminium is a very ductile metal. Thus, aluminium is used in making wires for electrical conduction.

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why is concenterated HNO3 transported in iron or aluminium containers

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i need the diagram of water cycle in chemistry

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Concentrated nitric acid renders alumunium passive by forming a protective oxide layer on the surface, that's why it can be used to transport nitric acid..
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Graphite consist of layers of bonded atom.Each layer is made up of hexagonally bonded carbon atom.The force of attraction b/w these layers are weak van der waals forces.So these layers can slide over each other and thus it can be used as a lubricant
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since nitric acid reacts with aluminium to form a oxide layer over it and becomes passive(inert) and do not furthur reacts with acid.
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1.
Concentrated HNO3 can be stored and transported in aluminium containers as it reacts with aluminium to form a thin protective oxide layer on the aluminium surface. This oxide layer renders aluminium passive.
2.
Graphite has a layered structure and different layers of graphite are bonded to each other by weak van der Waals’ forces. These layers can slide over each other. Graphite is soft and slippery. Therefore, graphite can be used as a lubricant.
3.
Silver, copper, and aluminium are among the best conductors of electricity. Silver is an expensive metal and silver wires are very expensive. Copper is quite expensive and is also very heavy. Aluminium is a very ductile metal. Thus, aluminium is used in making wires for electrical conduction.
 
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When hydrated alumina (Al2O3) is treated with aqueous NaOH solution than NaAlO2(sodium aluminate) and H2 is obtained. Al2O3.2H2O+2NaOH gives 2NaAlO2+3H2
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Graphite is used as lubricant due to its soft and slippery nature

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Conc.Hno3 can be transported in aluminium container
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Silver, copper, and aluminium are among the best conductors of electricity. Silver is an expensive metal and silver wires are very expensive. Copper is quite expensive and is also very heavy. Aluminium is a very ductile metal. Thus, aluminium is used in making wires for electrical conduction.
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