1.

What is the mass percent of oxygen in ethanol ?

Answer»

0.5214
0.1313
0.16
0.3473

Solution :Molecularformula of ETHENOL `=C_2H_5OH`
MOLAR mass of ethenol of `2xx12.01+6xx1.008+16`
=46.068g
Mass percent of OXYGEN `=(16)/(46.068)xx100=34.73%`


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