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\(n_{Al}=\frac{m_{Al}}{M_{Al}}=\frac{4,05}{27}=0,15mol\)
\(PTHH:4Al+3O_2->2Al_2O_3\)
4mol 3mol 2mol
0,15mol 0,1125mol 0,075mol
\(m_{O_2}=n_{O_2}.M_{O_2}=0,1125.32=3,6\left(g\right)\)
\(M_{Al_2O_3}=27.2+16.3=102\)g/mol
\(m_{Al_2O_3}=n_{Al_2O_3}.M_{Al_2O_3}=0,075.102=7,65\left(g\right)\)
\(PTHH:2KClO_3->2KCl+3O_2\)
2mol 3mol
0,075mol 0,1125mol
\(M_{KClO_3}=39+35,5+16.3=122,5\)g/mol
\(m_{KClO_3}=n_{KClO_3}.M_{KClO_3}=0,075.122,5=9,1875\left(g\right)\)
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