need the original manual solution only.

Isotactic polypropylene [CH2CHCH3]n has a monoclinic unit cell dimensions a=0.666nm,b=2.078nm and c=0.649nm (the polymer chain direction) and with y=99.6, the angle between a and b. (a) Determine the volume of the monoclinic uint cell in nm3 based on the dimension given. (b) Given that if there are 12 isotactic polypropylene repeating units in a monoclinic unit cell, determine the mass of the unit cell in g/mol. Please use atomic masses of 12 and 1g/mol for C and H, respectively (c) What is the density, in g/cm3, of the crystalline part of the polymer? (d) If the density of amorphous polypropylene is 0.886g/cm3, use the information in (c) to determine the volume fraction, in percentage (%), of crystals in a sample of polypropylene with a density of 0.905g/cm3