Answer
C: $ 10.1 \% $
H: $ 0.8 \% $
Cl: $ 89.1 \% $
Work Step by Step
1. Calculate the molar mass of $SnO_2$:
$ CHCl_3 $ : ( 35.45 $\times$ 3 )+ ( 1.008 $\times$ 1 )+ ( 12.01 $\times$ 1 )= 119.37 g/mol
C:$$\frac{( 12.01 \times 1 )}{119.37} \times 100\% = 10.1 \% $$
H:$$\frac{( 1.008 \times 1 )}{119.37} \times 100\% = 0.8 \% $$
Cl:$$\frac{( 35.45 \times 3 )}{119.37} \times 100\% = 89.1 \% $$
