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**I have a tutorial question that I'm not too sure of.**

**The question states:**

**Calculate the volume fraction Φ for a polymer solution of concentration C (given in g/L) and hydrodynamic radius R?**

**The answer was given as**

**https://s.yimg.com/hd/answers/i/f9b738ccf1bf42f38089e06bf1e8035f_A.jpeg?a=answers&mr=0&x=1433625143&s=43c9115d1b188fb3b3e983b9eb00f179 [Broken]**

**Could someone explain how V total was gotten?**

**Am I right in assuming the Volume of Polymer would be the volume of a the sphere multiplied by the number of polymers?**

**[Could this be a potential error in the solutions? In my notebook I have (C / NM)*sphere Volume]**

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