How do I explain this?

Question

anonymous · Answer

|dw:1441828194641:dw|

michele_laino · Answer

I'm sorry, I don't know your answer, since I'm good with inorganic chemistry only

anonymous · Answer

it is okay!! what about these two ?|dw:1441828432512:dw|

anonymous · Answer

* observe a mass

*NaCl to be 

:)

michele_laino · Answer

problem #1
here the sum of percentages is equal to 110%, which is impossible

michele_laino · Answer

@rvc

aaronq · Answer

You could separate $\sf ZnCl_2$ and cyclohexane by quite a few ways, but if you want to use their physical differences, think about melting point, boiling point, etc.

look these up online if you need to.

anonymous · Answer

The very first one is simple, $ZnCl_2$ doesn't even dissolve in cyclohexane so you can filter it out and throw away the cyclohexane. If you're crazy and want to throw away the $ZnCl_2$ and keep the cyclohexane, add water and you can easily take the cyclohexane off the top cause it'll float and the water will dissolve the hygroscopic zinc chloride.  But you were probably using the cyclohexane to keep the zinc chloride dry in the first place so this would be a waste, cause cyclohexane is fairly cheaply made from hydrogenating benzene in high yield.