Question

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Answer 1

b. In graphite, since pi-electrons are free to move throughout the entire layers so graphite is a good conductor ofelectricity. Its conductivity increases with temperature. because of these free electrons it is heat conductor.Each carbon of graphite has one free electron which makes it a good conductor of heat and electricity.

c. Graphite molecules are flat groups of carbon atoms that are stacked in layers. The layers slide against each other and allow the lead to slide off the pencil point and onto the paper. When you erase with a rubber eraser, thegraphite in the lead sticks to the rubber better than it does to the paper.

d.The carbon atoms are strongly bonded together in sheets. Because the bonds between the sheets are weak, graphiteshows lower shearing strength under friction force. Thus it can be used as a solid lubricant and has become one of traditional and primary solidlubrication materials.

e. Graphite is a good conductor of heat and electricity. ... Being resistant to chemicals and having a high melting point and also because it is a good conductor of heat, graphite is used to make crucibles.

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Answer 2

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