ng data Temperature of hot water Volume of water pulled into flask Temperature of ice bath 97.5 °C 125 mL 4.0 °C Volume of flask 492 mL Atmospheric pressure 758 torr a) Calculate the volume of the air, corrected, in the cold flask b) Calculate kh for the heated sample c) Calculate kc for the cooled sample

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Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.