Khối lượng mol \(Ba\left(NO_3\right)_2=137+\left(14+16.3\right).2=261\left(g\right)\)
\(\%Ba=\frac{137}{261}.100\%=52,5\%\)
\(\%N=\frac{28}{261}.100\%=10,7\%\)
\(\%O=\frac{96}{261}.100\%=36,8\%\)
%Ba=\(\frac{M_{Ba}}{M_{Ba\left(NO_3\right)_2}}.100\%\)<=>\(\frac{137}{261}\).100%=52,5%
%N=\(\frac{M_N}{M_{Ba\left(NO_3\right)_2}}.100\%\)<=>\(\frac{28}{261}.100\%\)=10,7%
%O=100% - (52,5%+10,7%)=36.8%
ta có : MBa(NO3)2 = 137 + (14 + 16.3) . 2 = 261 g/mol
=> \(\%Ba=\frac{137}{261}.100=52,5\%\)
=> \(\%N=\frac{28}{261}.100=10,7\%\)
=> %O = 100% - ( %Ba + %N) = 100% - ( 52,5% + 10,7%) =36,8%
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