40.0 g ( 1 mole ) --------------- 6.02x10²³ molecules
? ? --------------------------- 2.90x10²² molecules
mass = 2.90x10²² * 40.0 / 6.02x10²³
mass = 1.16x10²⁴ / 6.02x10²³
mass = 1.9269 g
hope this helps!
Answer:
The answer is "23765.4"
Explanation:
Motor weight average number 
Poly condensation degree dependent on the average number of molecular weights is as follows:

All monomer module, in this case, is propylene
Sunrise. Unit Wt = Mol. Propylene weight



A. I’m not positive but I’m pretty sure