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2,2g 0,28dm3
2,2-0,28
x-11,2
x=88
M COOH= 12 + 16 + 16 + 1= 45g.
R= 88-45=43g.
43= CnH2n+1
12n+2n+1=43
14n=42
n=3
CnH2n+1COOH=C3H5COOH
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