Freezing point question

Chemistry
Tutor: None Selected Time limit: 1 Day

A chemist finds a sample in the lab that he knows is either sodium selenate or sodium arsenite. He needs to know which compound it is so he may dispose of it properly. The chemist dissolves 1.50g of the substance in 7.50g of water and finds that the freezing point of the solution is -6.0 degrees C. Is the substance more likely to be sodium selenate or sodium arsenite, or is the chemist unable to tell which substance he has? 

Jun 5th, 2015

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sodium selenate................................................................................

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Jun 5th, 2015

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