A.30
B.10
C.40
D.20

A.16,09%.
B.18,14%.
C.21,49%.
D.20,09%.

A.2
B.1
C.3
D.4

A.4
B.1
C.2
D.3

A.2
B.4
C.1
D.3

A.12,0.
B.3,48.
C.2,16.
D.7,44.

A.30,85.
B.40,65.
C.86,95.
D.68,55.

A.10,08 gam.
B.9,52 gam.
C.13,44 gam.
D.11,76 gam.

A.4
B.2
C.3
D.6

A.axit axetic.
B.ancol etylic.
C.natri axetat.
D.ancol metylic.