Bài giải :
Bài 2 :
`a.`
`-m_{CO_2}=n_{CO_2}.M_{CO_2}=0,5.44=22(g)`
`b.`
`-m_{HCl}=n_{HCl}.M_{HCl}=0,6.36,5=21,9(g)`
`c.`
`-m_{Fe}=n_{Fe}.M_{Fe}=0,8.56=44,8(g)`
`d.`
`-m_{Fe_2O_3}=n_{Fe_2O_3}.M_{Fe_2O_3}=1,5.160=240(g)`
Bài 3 :
`a.`
`-V_{N_2}(đktc)=n_{N_2}.22,4=0,45.22,4=10,08(l)`
`b.`
`-n_{O_2}(đktc)=n_{O_2}.22,4=1,25.22,4=28(l)`
`c.`
`-n_{CO_2}(đktc)=n_{CO_2}.22,4=0,06.22,4=1,344(l)`
`d.`
`-n_{H_2}(đkt)=n_{H_2}.24=0,4.24=9,6(l)`
`e.`
`-n_{O_2}(đkt)=n_{O_2}.24=0,2.24=4,8(l)`
`f.`
`-n_{CO_2}(đkt)=n_{CO_2}.24=1,5.24=36(l)`
