C. liquid to solid i hope this helps
No because the mass of the empty beaker , mass of beaker is not balanced the amount of alcohol in the beaker.
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either first or second if not them try d but I'm pretty sure a also I'm sorry if I getbyou this wrong I dearly apologize
The empirical formula for the unknown compound would be: C2H4O (2 molecules of Carbon, 4 molecules of Hydrogen, and 1 molecule of Oxygen)