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# Same Mass Percent

APCHEM-OOQ4GI

Which of the following pairs of substances shares the same mass percent of each element?

A

$NaOCl$ and $OCl^-$

B

$CO$ and $CO_{2}$

C

$C_6H_{ 12 }O_6$ and $C_{ 3 }H_{ 6 }O_{ 3 }$

D

$C_6H_{ 12 }O_6$ and $H_2O$