Answer:
8.13x10^23 units of C2F4
Step-by-step explanation:
C2F4 is the empirical formula for Teflon. It is a long chain polymer made up of C2F4 units that are crosslinked. The length of each chain differs, depending on how the crosslinking proceeds. One might make an assumption about how many units are in an average polymenr in order to produce a figure for molar mass of the polymer, but, in this case, it will suffice that we can use the molar mass of just C2F4 for a reasonably accurate answer.
The molar mass of C2F4 is 100 grams/mole. 135 grams represents:
135g/(100 g/mole) = 1.35 moles C2F4
1 mole = 6.02x10^23 units of C2F4
Units of CF4 = (1.35)*(6.02x10^23) = 8.13x10^23 units of C2F4