# A solid mixture 5g consists of lead nitrate and sodium nitrate was heated below $600^{\large\circ}C$ until weight of residue was conotaut.If the loss in weight is 28%,find the amount of lead nitrate and sodium nitrate mixture.
$\begin{array}{1 1}(a)\;3.32g,1.68g&(b)\;2.38g,1.28g\\(c)\;1.14g,1g&(d)\;3.2g,2g\end{array}$