a) \(\%m_{Al}=\frac{54}{54+48}\approx52,9\%\)
\(\%m_O\approx100\%-52,9\%=47,1\%\)
b)\(\%m_C=\frac{72}{72+12+96}=40\%\)
\(\%m_H=\frac{12}{12+72+96}\approx6,66\%\)
\(\%m_O\approx100\%-40\%-6,66\%\approx53,34\%\)
c) \(\%m_S=\frac{32}{32+48}=40\%\)
\(\%m_O=60\%\)
a) M = 102 đvc
%Al = 52.94%
%O = 47.06%
b) M = 180 đvc
%C = 40%
%H = 6.67%
%O = 53.33%
c) M = 80 đvc
%S = 40%
%O = 60%