Polyethylene Is a Synthetic Polymer or Plastic with Many Uses $\times$

Multiple Choice

Polyethylene is a synthetic polymer or plastic with many uses.1.36 g of a polyethylene sample was dissolved in enough benzene to make 100.mL of solution,and the osmotic pressure was found to be 1.86 torr at 25^oC.What is the approximate molar mass of the polyethylene?

A) 179 g/mol
B) 1.14 $\times$ 10⁴ g/mol
C) 7.35 $\times$ 10³ g/mol
D) 1.24 $\times$ 10⁵ g/mol
E) 1.36 $\times$ 10⁵ g/mol