What are the differences between (properties wise) graphite, graphene, carbon nanotubes, and graphene oxide (similarities and differences) what are the advantages of using one form over another.

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Q: multiple choice question, choose one) A piece of Titanium weighing 252 grams, and at a temperature…

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Q: CH3 I CHCH3 CH3CHNCHCH3 CH3 CH3

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Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.