Question

1). Consider one hexagon unit in a graphene sheet. Given the carbon-carbon bond length as acc=1.42Å (1Å=10^-10m), calculate the total surface area (both top and bottom surfaces) of one hexagon unit. (Hint: the area of a hexagon with edge of r is: A = (3?3 / 2)r²). Perimeter = 6r Area = (3?3 / 2 )r² 2). How many carbon atoms are there in one hexagon unit? (Hint: Each carbon atom is shared by 3 hexagons). 3). Calculate the mass/area density of graphene sheet. (e.g. the mass of carbon atoms per unit graphene surface area). (Hint: The mass of 1 mole (1mole=6.02×10²³) carbon atoms is 12g). 4). Based on above calculation, if we have 1kg of graphene sheet, what is the total surface area (both top and bottom surfaces)?

          1). Consider one hexagon unit in a graphene sheet. Given the carbon-carbon bond length as acc=1.42Å (1Å=10^-10m), calculate the total surface area (both top and bottom surfaces) of one hexagon unit. (Hint: the area of a hexagon with edge of r is: A = (3?3 / 2)r²).

Perimeter = 6r
Area = (3?3 / 2 )r²

2). How many carbon atoms are there in one hexagon unit? (Hint: Each carbon atom is shared by 3 hexagons).

3). Calculate the mass/area density of graphene sheet. (e.g. the mass of carbon atoms per unit graphene surface area). (Hint: The mass of 1 mole (1mole=6.02×10²³) carbon atoms is 12g).

4). Based on above calculation, if we have 1kg of graphene sheet, what is the total surface area (both top and bottom surfaces)?

1). Consider one hexagon unit in a graphene sheet. Given the carbon-carbon bond length as acc=1.42Å (1Å=10^-10m), calculate the total surface area (both top and bottom surfaces) of one hexagon unit. (Hint: the area of a hexagon with edge of r is: A = (3?3 / 2)r²).

Perimeter = 6r
Area = (3?3 / 2 )r²

2). How many carbon atoms are there in one hexagon unit? (Hint: Each carbon atom is shared by 3 hexagons).

3). Calculate the mass/area density of graphene sheet. (e.g. the mass of carbon atoms per unit graphene surface area). (Hint: The mass of 1 mole (1mole=6.02×10²³) carbon atoms is 12g).

4). Based on above calculation, if we have 1kg of graphene sheet, what is the total surface area (both top and bottom surfaces)?

Added by Lisa C.

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