giúp mik bài 13,14,15 vs !!!!!!!!!

Bài 13:

$a)n_{FeS_2}=\dfrac{12}{120}=0,1(mol)$

Theo PT: $n_{Fe_2O_3}=0,05(mol);n_{SO_2}=0,2(mol);n_{O_2}=0,275(mol)$

$\Rightarrow n_{Fe_2O_3}=0,05.160=8(g)$

$b)n_{SO_2}=0,2.22,4=4,48(lít)$

$c)V_{O_2}=0,275.22,4=6,16(lít)$

$\Rightarrow V_{kk}=6,16.5=30,8(lít)$

Bài 14:

$a)PTHH:Zn+2HCl\to ZnCl_2+H_2$

$n_{Zn}=\dfrac{1,3}{65}=0,02(mol)$

Theo PT: $n_{ZnCl_2}=n_{H_2}=n_{Zn}=0,02(mol)$

$b)m_{ZnCl_2}=136.0,02=2,72(g);V_{H_2}=0,02.22,4=0,448(lít)$

$c)n_{HCl}=2n_{Zn}=0,04(mol)$

Bài 15:

$a)PTHH:2Fe+3Cl_2\xrightarrow{t^o}2FeCl_3$

$n_{Fe}=\dfrac{2,8}{56}=0,05(mol)$

Theo PT: $n_{Cl_2}=1,5.n_{Fe}=0,075(mol);n_{FeCl_3}=0,05(mol)$

$b)V_{Cl_2}=0,075.22,4=1,68(lít)$

$c)m_{FeCl_3}=0,05.162,5=8,125(g)$