Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?

(A) one / seventeen (X)
(B) sixteen / seventeen (X)
(C) one / three ()
(D) two / three (X)

Answers: Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is one / three.