Posted by blasting on Wednesday, February 10, 2010 at 8:30pm.
Surely you have more data than what you've typed.
Take the difference in mass of empty flask and the first material (either EtOH or H2O) which will give you the mass of that first material. Then mass/volume = density. Repeat for the second material except then the mass is the difference between the second and third weighings.
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