1. A
$C_6H_{12}O_6\xrightarrow{enzim}2C_2H_5OH+2CO_2$
$n_{C_6H_{12}O_6}=\dfrac{360}{180}=2(mol)=\dfrac{1}{2}n_{C_2H_5OH}$
$⇒n_{C_2H_5OH}=4(mol)$
$⇒m_{C_2H_5OH}=4.46=184(g)⇒A$
2. A
$C_6H_{12}O_6\xrightarrow{enzim}2C_2H_5OH+2CO_2$
$n_{C_6H_{12}O_6}=\dfrac{18}{180}=0,1(mol)=\dfrac{1}{2}n_{C_2H_5OH}$
$⇒n_{C_2H_5OH}=0,2(mol)$
$⇒m_{C_2H_5OH}=0,2.46=9,2(g)⇒A$
3. A
$C_6H_{12}O_6\xrightarrow{enzim}2C_2H_5OH+2CO_2$
$CO_2+Ca(OH)_2\xrightarrow{}CaCO_3+H_2O$
$n_{CaCO_3}=\dfrac{55,2}{100}=0,552(mol)=n_{CO_2}$
$n_{CO_2}=2n_{C_6H_12O_6}⇒n_{C_6H_12O_6}=\dfrac{0,552}{2}=0,276(mol)$
$n_{C_6H_12O_6}\text{thực tế}=\dfrac{0,276}{92}=0,3(mol)$
$m_{C_6H_12O_6}\text{thực tế}=0,3.180=54(g)⇒A$
