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# It is found that 16.5g of metal combine with oxygen to form 35.6g of metal oxide.Calculate the percentage of metal and oxygen in the compound.

$\begin{array}{1 1}46.3,53.7 \\ 40,60 \\ 40.9 ,59.1 \\ 36.3,63.7 \end{array}$

Mass of oxygen in oxide=(35.60-16.50)=19.10g
% of metal=$\large\frac{16.50}{35.60}$$\times 100 \qquad\quad\;\;=46.3 % of oxygen=\large\frac{16.50}{35.60}$$\times 100$
$\qquad\quad\;\;\;\;\;=53.7$
Hence (a) is the correct answer.