What is the ratio of the active masses of $22 \ g$ $CO_2$,$3 \ g$ $H_2$,and $7 \ g$ $N_2$ in a gaseous mixture?

  • A
    $22 : 3 : 7$
  • B
    $0.5 : 3 : 7$
  • C
    $1 : 3 : 1$
  • D
    $1 : 3 : 0.5$

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