Đáp án:
Giải thích các bước giải:
\[\begin{array}{l}
{M_{KBaPO4}} = 271\\
\% K = \frac{{39}}{{271}} \times 100 = 14,39\% \\
\% Ba = \frac{{137}}{{271}} \times 100 = 50,55\% \\
\% P = \frac{{31}}{{271}} \times 100 = 11,44\% \\
\% O = \frac{{16 \times 4}}{{271}} \times 100 = 23,62\%
\end{array}\]
\[\begin{array}{l}
{M_{NaN{O_3}}} = 85\\
\% Na = \frac{{23}}{{85}} \times 100 = 27,06\% \\
\% N = \frac{{14}}{{85}} \times 100 = 16,47\% \\
\% O = \frac{{16 \times 3}}{{85}} \times 100 = 56,47\%
\end{array}\]
