nO2= 1,5(mol)
PTHH: 4P + 5 O2 -to-> 2 P2O5
nP= 4/5.nO2= 4/5.1,5= 1,2(mol)
=>mP= 1,2. 31= 37,2(g)
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S+ O2-to-> SO2
nS= nO2= 1,5(mol)
=>mS= 1,5.32= 48(g)
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C+ O2-to->CO2
nC= nO2= 1,5(mol)
=>mC=1,5.12=18(G)
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3 Fe+ 2 O2 -to-> Fe3O4
nFe=3/2. nO2= 3/2 .1,5=2,25(mol)
=>mFe= 2,25.56=126(g)
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2 Zn+ O2 -to->ZnO
=> nZn=2.nO2= 2.1,5=3(mol)
=>mZn=3.65=195(g)
\(n_{O2}=\frac{33,6}{22,4}=1,5\left(mol\right)\)
\(4P+5O_2\rightarrow2P_2O_5\)
\(n_P=\frac{5}{4}.n_{O2}=\frac{5}{4}.1,5=1,875\left(mol\right)\)
\(S+O_2\rightarrow SO_2\)
\(n_S=n_{O2}=1,5\left(mol\right)\)
\(C+O_2\rightarrow CO_2\)
\(n_C=n_{O2}=1,5\left(mol\right)\)
\(3Fe+2O_2\rightarrow Fe_3O_4\)
\(n_{Fe}=\frac{3}{2}.n_{O2}=2,25\left(mol\right)\)
\(\Rightarrow m_{Fe}=2,25.56=126\left(g\right)\)
\(2Zn+O_2\rightarrow2ZnO\)
\(n_{Zn}=n_{O2}=1,5\left(mol\right)\)
\(\Rightarrow m_{Zn}=1,5.65=97,5\left(g\right)\)
