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A : H(2)O, CH(4), NH(3)" "," "B : H...

`A : H_(2)O, CH_(4), NH_(3)" "," "B : H_(2), N_(2), O_(2), F_(2)`

A

A' contains homogeneous molecules.

B

B' contains hetereogeneous molecules.

C

A' contains hetereogeneous molecules.

D

B' contains homogeneous molecules.

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