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(D) The law of multiple proportions states that when two elements combine to form more than one compound,the masses of one element that combine with a

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$SnCl_2, SnCl_4$

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(D) The law of multiple proportions states that when two elements combine to form more than one compound,the masses of one element that combine with a fixed mass of the other are in the ratio of small whole numbers.In the pair $SnCl_2$ and $SnCl_4$,the same element tin $(Sn)$ combines with chlorine $(Cl)$ in different proportions.For $SnCl_2$: $118.7 \ g$ of $Sn$ combines with $71 \ g$ of $Cl$.For $SnCl_4$: $118.7 \ g$ of $Sn$ combines with $142 \ g$ of $Cl$.The ratio of the masses of chlorine that combine with a fixed mass of tin is $142 : 71$,which simplifies to $2 : 1$.Since this is a simple whole-number ratio,this pair illustrates the law of multiple proportions.

Which one of the following pairs of compounds illustrates the law of multiple proportions?

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