1, \(M_{H_2SO_4}=1.2+32+16.4=98g/mol\)
\(\%H=\frac{1.2}{98}.100\%\approx2,04\%\)
\(\%S=\frac{32}{98}.100\%\approx32,65\%\)
\(\%O=100\%-2,04\%-32,65\%=65,31\%\)
2, \(M_{CH_3COOH}=12+1.3+12+16+16+1=60g/mol\)
\(\%C=\frac{12.2}{60}.100\%=40\%\)
\(\%H=\frac{1.4}{60}.100\%\approx6,67\%\)
\(\%O=1005-40\%-6,67\%=53,33\%\)
3, \(M_{NH_3}=14+1.3=17g/mol\)
\(\%m_N=\frac{14}{17}.100\%=82,35\%\)
\(\%m_H=\frac{3.1}{17}.100\%=17,65\%\)
4, \(M_{SO_2}=32+16.2=64g/mol\)
\(\%m_S=\frac{32}{64}.100\%=50\%\)
\(\%m_O=\frac{16.2}{64}.100\%=50\%\)
5, \(M_{SO_3}=32+16.3=80g/mol\)
\(\%S=\frac{32.100}{80}=40\%\)
\(\%O=100\%-40\%=60\%\)
6, \(M_{NH_4NO_3}=14.2+1.4+16.3=80g/mol\) (Đã sửa đề)
\(\%N=\frac{14.2.100}{80}=35\%\)
\(\%H=\frac{4.100}{80}=5\%\)
\(\%O=100\%-35\%-5\%=60\%\)