\(n_{Mg}=0,1\left(mol\right)\)
\(2Mg+O_2\underrightarrow{^{to}}2MgO\)
\(\Rightarrow n_{O2}=0,05\left(mol\right);n_{MgO}=0,1\left(mol\right)\)
\(\Rightarrow V_{O2}=0,05.22,4=1,12\left(l\right)\)
\(m_{MgO}=0,1.40=4\left(g\right)\)
\(2KClO_3\underrightarrow{^{to}}2KCl+3O_2\)
\(n_{KClO3}=\frac{0,1}{3}\left(mol\right)\)
\(\Rightarrow_{KClO3}=4,08\left(g\right)\)
2Mg+o2-->2MgO
0,1 ------0,05-----0,1 mol
nMg=2,4\24=0,1 mol
=>Vo2=0,05.22,4=1,12 mol
b)mMgO=0,1.40=4 g
2KClO3-->2KCl+3O2
0,07----------------1 mol
mKClO3=0,07.122,5=8,575 g
2Mg+o2-->2MgO
0,1 ------0,05-----0,1 mol
nMg=2,4\24=0,1 mol
=>Vo2=0,05.22,4=1,12 mol
b)mMgO=0,1.40=4 g
2KClO3-->2KCl+3O2
0,07----------------0,1 mol
mKClO3=0,07.122,5=8,575 g