este khó nè............

L

love_monster_2407

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A

acsimet_91

nBaCO3=0,07-------->nCO2=0,07
mH2O+mCO2=4,16---------->nH2O=0,06
n[O]=0,04
C:H:O=7:12:4
------>C7H12O4
Chọn B
=((=((=((=((=((=((=((=((
 
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