Question: P15A.6 Fully crystalline polyethene has its chains aligned in an orthorhombic unit cell of dimensions 740 pm x 493 pm x 253pm. There are two

P15A.6 Fully crystalline polyethene has its chains aligned in an orthorhombic

P15A.6 Fully crystalline polyethene has its chains aligned in an orthorhombic unit cell of dimensions 740 pm x 493 pm x 253pm. There are two repeating CH,CH, units in each unit cell. Calculate the theoretical mass density of fully crystalline polyethene. The actual mass density ranges from 0.92 to 0.95 gcm 3

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