DAU COROANA HELP CHIMIE
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CH3-C(CH3)=C(CH3)-CH3
FORMULA MOLECULARA; C6H12
miu= (6x12gC+12gH)/mol= 84g/mol
84g C6H12..............72gC.........12gH
100g.........................X................... Y
X=85,7%C
Y=14,3% H
Explicație: